Datasets:

Hieuman

/

ArxivP2P

like 0

[ "Design of the Muon Collider Lattice: Present Status\n We discuss a preliminary design for a high luminosity 4 TeV center of mass\n$\\mu^+\\,\\mu^-$ collider ring.\n", "Approximate Analytical Description of the Underdense Short Plasma Lens\n The perturbative approach for describing the underdense\nplasma--ultrarelativistic electron bunch system is developed, using the ratio\n$\\frac{n_0}{n_b}$ as a small parameter ($n_b$--bunch,$n_0$--plasma electron\ndensities). Focusing of the electron bunch emerged in the first approximation\nof the perturbative procedure as a result of the plasma electrons\nredistribution. Focusing gradient and strength for ultrarelativistic, flat,\nuniform and short bunch are obtained and compared with the previous results.\n", "A tracking algorithm for the stable spin polarization field in storage\n rings using stroboscopic averaging\n Polarized protons have never been accelerated to more than about $25$GeV. To\nachieve polarized proton beams in RHIC (250GeV), HERA (820GeV), and the\nTEVATRON (900GeV), ideas and techniques new to accelerator physics are needed.\nIn this publication we will stress an important aspect of very high energy\npolarized proton beams, namely the fact that the equilibrium polarization\ndirection can vary substantially across the beam in the interaction region of a\nhigh energy experiment when no countermeasure is taken. Such a divergence of\nthe polarization direction would not only diminish the average polarization\navailable to the particle physics experiment, but it would also make the\npolarization involved in each collision analyzed in a detector strongly\ndependent on the phase space position of the interacting particle. In order to\nanalyze and compensate this effect, methods for computing the equilibrium\npolarization direction are needed. In this paper we introduce the method of\nstroboscopic averaging, which computes this direction in a very efficient way.\nSince only tracking data is needed, our method can be implemented easily in\nexisting spin tracking programs. Several examples demonstrate the importance of\nthe spin divergence and the applicability of stroboscopic averaging.\n", "Orbit Dynamics for Unstable Linear Motion\n A treatment is given of the orbit dynamics for linear unstable motion that\nallows for the zeros in the beta function and makes no assumptions about the\nrealness of the betatron and phase functions. The phase shift per turn is shown\nto be related to the beta function and the number of zeros the beta function\ngoes through per turn. The solutions of the equations of motion are found in\nterms of the beta function.\n", "An Investigation of Stochastic Cooling in the Framework of Control\n Theory\n This report provides a description of unbunched beam stochastic cooling in\nthe framework of control theory. The main interest in the investigation is\nconcentrated on the beam stability in an active cooling system. A stochastic\ncooling system must be considered as a closed-loop, similar to the feedback\nsystems used to damp collective instabilities. These systems, which are able to\nact upon themselves, are potentially unstable.\n The self-consistent solution for the beam motion is derived by means of a\nmode analysis of the collective beam motion. This solution yields a criterion\nfor the stability of each collective mode. The expressions also allow for\noverlapping frequency bands in the beam spectrum and thus are valid over the\nentire frequency range.\n Having established the boundaries of stability in this way, the Fokker-Planck\nequation is used to describe the cooling process. This description does not\ninclude collective effects and thus a stable beam must be assumed. Hence the\npredictions about the cooling process following from the Fokker-Planck equation\nonly make physical sense within the boundaries of beam stability. Finally it is\nverified that the parameters of the cooling system which give the best cooling\nresults are compatible with the stability of the beam.\n", "Calculation of the dynamic aperture in the ANKA storage ring with a\n high-field wavelength shifter\n Third order tracking calculations show that a wavelength shifter on the basis\nof a commercially available 12 T split-pair solenoid is compatible with the\nANKA storage ring\n", "Polarization in a Muon Collider\n In this paper the possibility of obtaining polarized beams in a high energy\nmuon collider is discusssed\n", "Selfacceleration of Electrons in One-dimensional Bunches, Moving in Cold\n Plasma\n Nonlinear dynamics of the one-dimensional ultrarelativistic bunch of\nelectrons,moving in cold plasma,is considered in multiple scales perturbative\napproach. A square root of the inverse Lorentz factor of the bunch electrons is\ntaken as a small parameter. Bunch electrons momenta is changed in the first\napproximation.In the underdense plasma and for the model example of the\ncombined bunch the selfacceleration of the bunch electrons can be remarkable.\n", "A High Current Proton Linac with 352 MHz SC Cavities\n A proposal for a 10-120 mA proton linac employing superconducting\nbeta-graded, CERN type, four cell cavities at 352 MHz is presented. The high\nenergy part (100 MeV-1 GeV) of the machine is split in three beta-graded\nsections, and transverse focusing is provided via a periodic doublet array. All\nthe parameters, like power in the couplers and accelerating fields in the\ncavities, are within the state of the art, achieved in operating machines. A\nfirst stage of operation at 30 mA beam current is proposed, while the upgrade\nof the machine to 120 mA operation can be obtained increasing the number of\nklystrons and couplers per cavity. The additional coupler ports, up to four,\nwill be integrated in the cavity design. Preliminary calculations indicate that\nbeam transport is feasible, given the wide aperture of the 352 MHz structures.\nA capital cost of less than 100 M$ at 10 mA, reaching up to 280 M$ for the 120\nmA extension, has been estimated for the superconducting high energy section\n(100 MeV-1 GeV). The high efficiency of the proposed machine, reaching 50% at\n15 mA, makes it a good candidate for proposed nuclear waste incineration\nfacilities and Energy Amplifier studies.\n", "Coupling Impedances of Azimuthally Symmetric Obstacles of\n Semi-Elliptical Shape in a Beam Pipe\n The beam coupling impedances of small axisymmetric obstacles having a\nsemi-elliptical cross section along the beam in the vacuum chamber of an\naccelerator are calculated at frequencies for which the wavelength is large\ncompared to a typical size of the obstacle. Analytical results are obtained for\nboth the irises and the cavities with such a shape which allow simple estimates\nof their broad-band impedances.\n", "Beam Coupling Impedances of Obstacles Protruding into Beam Pipe\n The beam coupling impedances of small obstacles protruding inside the vacuum\nchamber of an accelerator are calculated analytically at frequencies for which\nthe wavelength is large compared to a typical size of the obstacle. Simple\nformulas for a few important particular cases, including both essentially\nthree-dimensional objects like a post or a mask and axisymmetric irises, are\npresented. The analytical results are compared and agree with three-dimensional\ncomputer simulations. These results allow simple practical estimates of the\nbroad-band impedance contributions from such discontinuities.\n" ]

[ "Optimized MPGD-based Photon Detectors for high momentum particle\n identification at the Electron-Ion Collider\n Particle IDentification (PID) is a central requirement of the experiments at\nthe future EIC. Hadron PID at high momenta by RICH techniques requires the use\nof low density gaseous radiators, where the challenge is the limited length of\nthe radiator region available at a collider experiment. By selecting a photon\nwavelength range in the far UV domain, around 120 nm, the number of detectable\nphotons can be increased. Ideal sensors are gaseous Photon Detectors (PD) with\nCsI photocathode, where the status of the art is represented by the MPGD-based\nPDs at COMPASS RICH. Detector optimization is required for the application at\nEIC. Here we report about a dedicated prototype where the sensor pad-size has\nbeen reduced to preserve the angular resolution. A new DAQ system based on the\nSRS readout electronics has been developed for the laboratory and test beam\nstudies of the prototype.", "On polarized scattering equations for superamplitudes of 11D\n supergravity and ambitwistor superstring\n We revisited the formalism of 11D polarized scattering equation by Geyer and\nMason from the perspective of spinor frame approach and spinor moving frame\nformulation of the 11D ambitwistor superstring action. In particular, we\nrigorously obtain the equation for the spinor function on Riemann sphere from\nthe supertwistor form of the ambitwistor superstring action, write its general\nsolution and use it to derive the polarized scattering equation. We show that\nthe expression used by Geyer and Mason to motivate their ansatz for the\nsolution of polarized scattering equation can be obtained from our solution\nafter a suitable gauge fixing. To this end we use the hidden gauge symmetries\nof the 11D ambitwistor superstring, including $SO(16)$, and the description of\nambitwistor superstring as a dynamical system in an 11D superspace enlarged by\nbosonic directions parametrized by 517 tensorial central charge coordinates\n$Z^{\\underline{\\mu} \\underline{\\nu}}$ and\n$Z^{\\underline{\\mu}\\underline{\\nu}\\underline{\\rho}\\underline{\\sigma}\\underline{\\kappa}}$.\n We have also found the fermionic superpartner of the polarized scattering\nequation. This happens to be a differential equation in fermionic variables\nimposed on the superamplitude, rather then just a condition on the scattering\ndata as the bosonic polarized scattering equation is.\n D=10 case is also discussed stressing the similarities and differences with\n11D systems. The useful formulation of 10D ambitwistor superstring considers it\nas a dynamical system in superspace enlarged with 126 tensorial central charge\ncoordinates $Z^{\\mu\\nu\\rho\\sigma\\kappa}$.", "Production of $P_{c}$(4312) state in electron-proton collisions\n We study the cross sections for the electro-production of $P_c(4312)$\nparticle, a recently discovered pentaquark state, in electron-proton collisions\nassuming possible quantum numbers to be $J^{P}=\\frac{1}{2}^\\pm,\n\\frac{3}{2}^\\pm$. $\\sqrt{s}$ is set to the energy of the future Electron Ion\nCollider at Brookhaven National Laboratory, in order to asses the possibility\nof the measurement in this facility. One can discriminate the spin of\n$P_c(4312)$ by comparing the pseudorapidity distribution in two different\npolarization configurations for proton and electron beams. Furthermore, the\nparity of $P_c(4312)$ can be discerned by analyzing the decay angle in the $P_c\n\\rightarrow p +J/\\psi$ channel. As the multiplicity of $P_c$ production in our\ncalculation is large, the EIC can be considered as a future facility for\nprecision measurement of heavy pentaquarks.", "Improving particle beam acceleration in plasmas\n The dynamics of wave-particle interactions in magnetized plasmas restricts\nthe wave amplitude to moderate values for particle beam acceleration from rest\nenergy. We analyze how a perturbing invariant robust barrier modifies the phase\nspace of the system and enlarges the wave amplitude interval for particle\nacceleration. For low values of the wave amplitude, the acceleration becomes\neffective for particles with initial energy close to the rest energy. For\nhigher values of the wave amplitude, the robust barrier controls chaos in the\nsystem and restores the acceleration process. We also determine the best\nposition for the perturbing barrier in phase space in order to increase the\nfinal energy of the particles.", "Babinet-Complementary Structures for Implementation of\n Pseudospin-Polarized Waveguides\n In this work, we prove a theorem that states the electromagnetic (EM) duality\ncorrespondence between eigenmodes of complementary structures, induces\ncounterpropagating spin-polarized states in different types of waveguides where\nmirror reflection symmetries are preserved around one (or more) arbitrary\nplane(s). Similar to photonic topological insulators (PTIs), which support\ntopologically non-trivial direction-dependent spin polarizations, our\npseudospin-polarized systems support one-way states that manifest robustness,\nhowever, the advantage of our structures is that they can be implemented in\nextremely broad bandwidth simply using artificial dual impedance surfaces.\nConsequently, there is no need to bulk electromagnetic materials. On the basis\nof our theory, the concept of the pseudospin-polarized waveguide can be\nrealized using Babinet complementary structures, ranging from microwave to THz\nregime. We design and develop various unidirectional waveguides and\nspin-filtered feature in the microwave regime is investigated.", "Physics with CEBAF at 12 GeV and Future Opportunities\n We summarize the ongoing scientific program of the 12 GeV Continuous Electron\nBeam Accelerator Facility (CEBAF) and give an outlook into future scientific\nopportunities. The program addresses important topics in nuclear, hadronic, and\nelectroweak physics including nuclear femtography, meson and baryon\nspectroscopy, quarks and gluons in nuclei, precision tests of the standard\nmodel, and dark sector searches. Potential upgrades of CEBAF are considered,\nsuch as higher luminosity, polarized and unpolarized positron beams, and\ndoubling the beam energy.", "Vector boson tagged jets and jet substructure\n In these proceedings, we report on recent results related to vector\nboson-tagged jet production in heavy ion collisions and the related\nmodification of jet substructure, such as jet shapes and jet momentum sharing\ndistributions. $Z^0$-tagging and $\\gamma$-tagging of jets provides new\nopportunities to study parton shower formation and propagation in the\nquark-gluon plasma and has been argued to provide tight constrains on the\nenergy loss of reconstructed jets. We present theoretical predictions for\nisolated photon-tagged and electroweak boson-tagged jet production in Pb+Pb\ncollisions at $\\sqrt{s_{NN}} = 5.02$ TeV at the LHC, addressing the\nmodification of their transverse momentum and transverse momentum imbalance\ndistributions. Comparison to recent ATLAS and CMS experimental measurements is\nperformed that can shed light on the medium-induced radiative corrections and\nenergy dissipation due to collisional processes of predominantly\nquark-initiated jets. The modification of parton splitting functions in the QGP\nfurther implies that the substructure of jets in heavy ion collisions may\ndiffer significantly from the corresponding substructure in proton-proton\ncollisions. Two such observables and the implication of tagging on their\nevaluation is also discussed.", "Commissioning and operation of the Cherenkov detector for proton Flux\n Measurement of the UA9 Experiment\n The UA9 Experiment at CERN-SPS investigates channeling processes in bent\nsilicon crystals with the aim to manipulate hadron beams. Monitoring and\ncharacterization of channeled beams in the high energy accelerators environment\nideally requires in-vacuum and radiation hard detectors. For this purpose the\nCherenkov detector for proton Flux Measurement (CpFM) was designed and\ndeveloped. It is based on thin fused silica bars in the beam pipe vacuum which\nintercept charged particles and generate Cherenkov light. The first version of\nthe CpFM is installed since 2015 in the crystal-assisted collimation setup of\nthe UA9 experiment. In this paper the procedures to make the detector\noperational and fully integrated in the UA9 setup are described. The most\nimportant standard operations of the detector are presented. They have been\nused to commission and characterize the detector, providing moreover the\nmeasurement of the integrated channeled beam profile and several functionality\ntests as the determination of the crystal bending angle.\n The calibration has been performed with Lead (Pb) and Xenon (Xe) beams and\nthe results are applied to the flux measurement discussed here in detail.", "Unparticle physics with broken scale invariance\n If scale invariance is exact, unparticles are unlikely to be probed in\ncolliders since there are stringent constraints from astrophysics and\ncosmology. However these constraints are inapplicable if scale invariance is\nbroken at a scale mu >~ 1 GeV. The case 1 GeV <~ mu < M_Z is particularly\ninteresting since it allows unparticles to be probed at and below the Z pole.\nWe show that mu can naturally be in this range if only vector unparticles\nexist, and briefly remark on implications for Higgs phenomenology. We then\nobtain constraints on unparticle parameters from e+ e- -> mu+ mu- cross-section\nand forward-backward asymmetry data, and compare with the constraints from\nmono-photon production and the Z hadronic width.", "Studying Deeply Virtual Compton Scattering with Neural Networks\n Neural networks are utilized to fit Compton form factor H to HERMES data on\ndeeply virtual Compton scattering off unpolarized protons. We used this result\nto predict the beam charge-spin assymetry for muon scattering off proton at the\nkinematics of the COMPASS II experiment.", "Feasibility studies of time-like proton electromagnetic form factors at\n PANDA at FAIR\n Simulation results for future measurements of electromagnetic proton form\nfactors at \\PANDA (FAIR) within the PandaRoot software framework are reported.\nThe statistical precision with which the proton form factors can be determined\nis estimated. The signal channel $\\bar p p \\to e^+ e^-$ is studied on the basis\nof two different but consistent procedures. The suppression of the main\nbackground channel, $\\textit{i.e.}$ $\\bar p p \\to \\pi^+ \\pi^-$, is studied.\nFurthermore, the background versus signal efficiency, statistical and\nsystematical uncertainties on the extracted proton form factors are evaluated\nusing two different procedures. The results are consistent with those of a\nprevious simulation study using an older, simplified framework. However, a\nslightly better precision is achieved in the PandaRoot study in a large range\nof momentum transfer, assuming the nominal beam conditions and detector\nperformance.", "Photon production in relativistic nuclear collisions at SPS and RHIC\n energies\n Chiral Lagrangians are used to compute the production rate of photons from\nthe hadronic phase of relativistic nuclear collisions. Special attention is\npaid to the role of the pseudovector a_1 meson. Calculations that include\nreactions with strange mesons, hadronic form factors and vector spectral\ndensities consistent with dilepton production, as well as the emission from a\nquark-gluon plasma and primordial nucleon-nucleon collisions, reproduce the\nphoton spectra measured at the Super Proton Synchrotron (SPS). Predictions for\nthe Relativistic Heavy Ion Collider (RHIC) are made.", "Spanning the full Poincar\\'e sphere with polariton Rabi oscillations\n We propose theoretically and demonstrate experimentally a generation of light\npulses whose polarization varies temporally to cover selected areas of the\nPoincar\\'e sphere with tunable swirling speed and total duration (1 ps and 10\nps respectively in our implementation). The effect relies on the Rabi\noscillations of two polarized fields in the strong coupling regime, excited by\ntwo counter-polarized and delayed pulses. The interferences of the oscillating\nfields result in the precession of the Stokes vector of the emitted light while\npolariton lifetime imbalance results in its drift from a circle on the sphere\nof controllable radius to a single point at long times. The positioning of the\ninitial and final states allows to engineer the type of polarization spanning,\nincluding a full sweeping of the Poincar\\'e sphere. The universality and\nsimplicity of the scheme should allow for the deployment of time varying\npolarization fields at a technologically exploitable level.", "What can we really learn from positron flux 'anomalies'?\n We present a critical analysis of the observational constraints on, and of\nthe theoretical modeling of, aspects of cosmic ray (CR) generation and\npropagation in the Galaxy, which are relevant for the interpretation of recent\npositron and anti-proton measurements. We give simple, analytic, model\nindependent expressions for the secondary pbar flux, and an upper limit for the\nsecondary e+ flux, obtained by neglecting e+ radiative losses, e+/(e+ +\ne-)<0.2\\pm0.1 up to ~300 GeV. These expressions are completely determined by\nthe rigidity dependent grammage, which is measured from stable CR secondaries\nup to ~150 GeV/nuc, and by nuclear cross sections measured in the laboratory.\npbar and e+ measurements, available up to ~100 GeV, are consistent with these\nestimates, implying that there is no need for new, non-secondary, pbar or e+\nsources. The radiative loss suppression factor f_{s,e+} of the e+ flux depends\non the e+ propagation in the Galaxy, which is not understood theoretically. A\nrough, model independent estimate of f_{s,e+} 1/3 can be obtained at a single\nenergy, E\\sim20 GeV, from unstable secondary decay and is found to be\nconsistent with e+ measurements, including the positron fraction measured by\nPAMELA. We show that specific detailed models, that agree with compositional CR\ndata, agree with our simple expressions for the e+ and pbar flux, and that the\nclaims that the positron fraction measured by PAMELA requires new primary e+\nsources are based on assumptions, that are not supported by observations. If\nPAMELA results are correct, they suggest that f_{s,e+} is slightly increasing\nwith energy, which provides an interesting constraint on CR propagation models.\nWe argue that measurements of the e+ to pbar ratio are more useful for\nchallenging secondary production models than the positron fraction.", "A microwave chip-based beam splitter for low-energy guided electrons\n We demonstrate the splitting of a low-energy electron beam by means of a\nmicrowave pseudopotential formed above a planar chip substrate. Beam splitting\narises from smoothly transforming the transverse guiding potential for an\nelectron beam from a single-well harmonic confinement into a double-well,\nthereby generating two separated output beams with $5\\,$mm lateral spacing.\nEfficient beam splitting is observed for electron kinetic energies up to\n$3\\,$eV, in excellent agreement with particle tracking simulations. We discuss\nprospects of this novel beam splitter approach for electron-based quantum\nmatter-wave optics experiments.", "Suppression of Cosmic Muon Spallation Backgrounds in Liquid Scintillator\n Detectors Using Convolutional Neural Networks\n Cosmic muon spallation backgrounds are ubiquitous in low-background\nexperiments. For liquid scintillator-based experiments searching for\nneutrinoless double-beta decay, the spallation product $^{10}$C is an important\nbackground in the region of interest between 2-3 MeV and determines the depth\nrequirement for the experiment. We have developed an algorithm based on a\nconvolutional neural network that uses the temporal and spatial correlations in\nlight emissions to identify $^{10}$C background events. With a typical\nkiloton-scale detector configuration like the KamLAND detector, we find that\nthe algorithm is capable of identifying 61.6% of the $^{10}$C at 90% signal\nacceptance. A detector with perfect light collection could identify 98.2% at\n90% signal acceptance. The algorithm is independent of vertex and energy\nreconstruction, so it is complementary to current methods and can be expanded\nto other background sources.", "Six-Dimensional Cooling Simulations for the Muon Collider\n The two cooling channels based on the RFOFO ring concept are considered and\nsimulated. One of them is the RFOFO helix, also known as the Guggenheim. The\nhelical shape of the channel resolves the injection and extraction issues as\nwell as the absorber overheating issue. The issue of the RF breakdown in the\nmagnetic field is addressed in the so-called open cavity cooling channel\nlattice with magnetic coils in the irises of the RF cavities. The details of\nthe tracking studies of both channels are presented and compared to the\nperformance of the original RFOFO cooling ring design.", "Coherent Beam-Beam Tune Shift of Unsymmetrical Beam-Beam Interactions\n with Large Beam-Beam Parameter\n Coherent beam-beam tune shift of unsymmetrical beam-beam interactions was\nstudied experimentally and numerically in HERA where the lepton beam has a very\nlarge beam-beam parameter (up to $\\xi_y=0.272$). Unlike the symmetrical case of\nbeam-beam interactions, the ratio of the coherent and incoherent beam-beam tune\nshift in this unsymmetrical case of beam-beam interactions was found to\ndecrease monotonically with increase of the beam-beam parameter. The results of\nself-consistent beam-beam simulation, the linearized Vlasov equation, and the\nrigid-beam model were compared with the experimental measurement. It was found\nthat the coherent beam-beam tune shifts measured in the experiment and\ncalculated in the simulation agree remarkably well but they are much smaller\nthan those calculated by the linearized Vlasov equation with the single-mode\napproximation or the rigid-beam model. The study indicated that the single-mode\napproximation in the linearization of Vlasov equation is not valid in the case\nof unsymmetrical beam-beam interactions. The rigid-beam model is valid only\nwith a small beam-beam parameter in the case of unsymmetrical beam-beam\ninteractions.", "PENTrack---a simulation tool for ultracold neutrons, protons, and\n electrons in complex electromagnetic fields and geometries\n Modern precision experiments trapping low-energy particles require detailed\nsimulations of particle trajectories and spin precession to determine\nsystematic measurement limitations and apparatus deficiencies. We developed\nPENTrack, a tool that allows to simulate trajectories of ultracold neutrons and\ntheir decay products---protons and electrons---and the precession of their\nspins in complex geometries and electromagnetic fields. The interaction of\nultracold neutrons with matter is implemented with the Fermi-potential\nformalism and diffuse scattering using Lambert and microroughness models. The\nresults of several benchmark simulations agree with STARucn v1.2, uncovered\nseveral flaws in Geant4 v10.2.2, and agree with experimental data. Experiment\ngeometry and electromagnetic fields can be imported from commercial\ncomputer-aided-design and finite-element software. All simulation parameters\nare defined in simple text files allowing quick changes. The simulation code is\nwritten in C++ and is freely available at github.com/wschreyer/PENTrack.git.", "Light Front Models of the Leptons, Bosons, and Quarks\n The elementary particles are modeled as harmonic oscillator excitations of\ntransverse U(1) gauge fields propagating at v = c, with open and closed\nstring-like propagation paths. One, two and three node states represent the\nleptons, bosons, and quarks. We incorporate a twist theta for the gauge field\ncomponents which rotate counterclockwise (L) for the electron, yielding a\nchiral model. Theta increases by pi from node to node, making the lepton models\nSU(2) representations. At nodes the twist may reverse, creating new particle\nstates. For three nodes, twist combinations map the SU(3) color states of the\nquarks. Generations are modeled topologically by the winding number of the\nstrings. Mapping model E fields to distant observers makes understandable how\nfractional charges arise for the quarks. These models are 3D slices of\nspacetime, allowing us to make drawings of particle field conformations. From\nmodel particle quantum numbers, new mass relationships are derived.", "Study of the time and space distribution of beta+ emitters from 80 MeV/u\n carbon ion beam irradiation on PMMA\n Proton and carbon ion therapy is an emerging technique used for the treatment\nof solid cancers. The monitoring of the dose delivered during such treatments\nand the on-line knowledge of the Bragg peak position is still a matter of\nresearch. A possible technique exploits the collinear $511\\ \\kilo\\electronvolt$\nphotons produced by positrons annihilation from $\\beta^+$ emitters created by\nthe beam. This paper reports rate measurements of the $511\\ \\kilo\\electronvolt$\nphotons emitted after the interactions of a $80\\ \\mega\\electronvolt / u$ fully\nstripped carbon ion beam at the Laboratori Nazionali del Sud (LNS) of INFN,\nwith a Poly-methyl methacrylate target. The time evolution of the $\\beta^+$\nrate was parametrized and the dominance of $^{11}C$ emitters over the other\nspecies ($^{13}N$, $^{15}O$, $^{14}O$) was observed, measuring the fraction of\ncarbon ions activating $\\beta^+$ emitters $A_0=(10.3\\pm0.7)\\cdot10^{-3}$. The\naverage depth in the PMMA of the positron annihilation from $\\beta^+$ emitters\nwas also measured, $D_{\\beta^+}=5.3\\pm1.1\\ \\milli\\meter$, to be compared to the\nexpected Bragg peak depth $D_{Bragg}=11.0\\pm 0.5\\ \\milli\\meter$ obtained from\nsimulations.", "Mississippi State Axion Search: A Light Shining though a Wall ALP Search\n The elegant solutions to the strong CP problem predict the existence of a\nparticle called axion. Thus, the search for axion like particles (ALP) has been\nan ongoing endeavor. The possibility that these axion like particles couple to\nphotons in presence of magnetic field gives rise to a technique of detecting\nthese particles known as light shining through a wall (LSW). Mississippi State\nAxion Search (MASS) is an experiment employing the LSW technique in search for\naxion like particles. The apparatus consists of two radio frequency (RF)\ncavities, both under the influence of strong magnetic field and separated by a\nlead wall. While one of the cavities houses a strong RF generator, the other\ncavity houses the detector systems. The MASS apparatus looks for excesses in RF\nphotons that tunnel through the wall as a signature of candidate axion-like\nparticles. The concept behind the experiment as well as the projected\nsensitivities are presented here.", "The self-adjoint toroidal dipole operator in nanostructures\n The parity violation in nuclear reactions led to the discovery of the new\nclass of toroidal multipoles. Since then, it was observed that toroidal\nmultipoles are present in the electromagnetic structure of systems at all\nscales, from elementary particles, to solid state systems and metamaterials.\nThe toroidal dipole ${\\bf T}$ (the lowest order multipole) is the most common.\nIn quantum systems, this corresponds to the toroidal dipole operator $\\hat{\\bf\nT}$, with the projections $\\hat{T}_i$ ($i=1,2,3$) on the coordinate axes. Here\nwe analyze a quantum particle in a system with cylindrical symmetry, which is a\ntypical system in which toroidal moments appear. We find the expressions for\nthe Hamiltonian, momenta, and toroidal dipole operators in adequate curvilinear\ncoordinates, which allow us to find analytical expressions for the\neigenfunctions of the momentum operators. While the toroidal dipole is\nhermitian, it is not self-adjoint, but in the new set of coordinates the\noperator $\\hat{T}_3$ splits into two components, one of which is (only)\nhermitian, whereas the other one is self-adjoint. The self-adjoint component is\nthe one that is physically significant and represents an observable.\nFurthermore, we numerically diagonalize the Hamiltonian and the toroidal dipole\noperator and find their eigenfunctions and eigenvalues. We write the partition\nfunction and calculate the thermodynamic quantities for a system of ideal\nparticles on a torus. Besides proving that the toroidal dipole is self-adjoint\nand therefore an observable (a finding of fundamental relevance) such systems\nopen up the possibility of making metamaterials that exploit the quantization\nand the quantum properties of the toroidal dipoles.", "A Bayesian approach to magnetic moment determination using muSR\n A significant challenge in zero-field muSR experiments arises from the\nuncertainty in the muon site. It is possible to calculate the dipole field (and\nhence precession frequency nu) at any particular site given the magnetic moment\nmu and magnetic structure. One can also evaluate f(nu), the probability\ndistribution function of nu assuming that the muon site can be anywhere within\nthe unit cell with equal probability, excluding physically forbidden sites.\nSince nu is obtained from experiment, what we would like to know is g(mu|nu),\nthe probability density function of mu given the observed nu. This can be\nobtained from our calculated f(nu/mu) using Bayes' theorem. We describe an\napproach to this problem which we have used to extract information about real\nsystems including a low-moment osmate compound, a family of molecular magnets,\nand an iron-arsenide compound.", "Lamb shift in muonic deuterium atom\n We present new investigation of the Lamb shift (2P_{1/2}-2S_{1/2}) in muonic\ndeuterium (mu d) atom using the three-dimensional quasipotential method in\nquantum electrodynamics. The vacuum polarization, nuclear structure and recoil\neffects are calculated with the account of contributions of orders alpha^3,\nalpha^4, alpha^5 and alpha^6. The results are compared with earlier performed\ncalculations. The obtained numerical value of the Lamb shift 202.4139 meV can\nbe considered as a reliable estimate for the comparison with forthcoming\nexperimental data.", "Neutrinoproduction of Photons and Pions From Nucleons in a Chiral\n Effective Field Theory for Nuclei\n Neutrino-induced productions (neutrinoproduction) of photons and pions from\nnucleons and nuclei are important for the interpretation of\nneutrino-oscillation experiments, as they are potential backgrounds in the\nMiniBooNE experiment [A. A. Aquilar-Arevalo et al. (MiniBooNE Collaboration),\nPhys. Rev. Lett. {\\bf 100}, 032301 (2008)]. These processes are studied at\nintermediate energies, where the \\Delta (1232) resonance becomes important. The\nLorentz-covariant effective field theory, which is the framework used in this\nseries of study, contains nucleons, pions, \\Delta s, isoscalar scalar (\\sigma)\nand vector (\\omega) fields, and isovector vector (\\rho) fields. The lagrangian\nexhibits a nonlinear realization of (approximate) $SU(2)_L \\otimes SU(2)_R$\nchiral symmetry and incorporates vector meson dominance. In this paper, we\nfocus on setting up the framework. Power counting for vertices and Feynman\ndiagrams is explained. Because of the built-in symmetries, the vector current\nis automatically conserved (CVC), and the axial-vector current is partially\nconserved (PCAC). To calibrate the axial-vector transition current (N\n$\\leftrightarrow$ \\Delta), pion production from the nucleon is used as a\nbenchmark and compared to bubble-chamber data from Argonne and Brookhaven\nNational Laboratories. At low energies, the convergence of our power-counting\nscheme is investigated, and next-to-leading-order tree-level corrections are\nfound to be small.", "QED radiative corrections to neutrino-nucleon elastic scattering\n Neutrino oscillation experiments at accelerator energies aim to establish CP\nviolation in the neutrino sector by measuring the energy-dependent rate of\n$\\nu_e$ appearance and $\\nu_\\mu$ disappearance in a $\\nu_\\mu$ beam. These\nexperiments can precisely measure $\\nu_\\mu$ cross sections at near detectors,\nbut $\\nu_e$ cross sections are poorly constrained and require theoretical\ninputs. In particular, QED radiative corrections are different for electrons\nand muons. These corrections are proportional to the small QED coupling,\n$\\alpha \\approx 1/137$; however, the large separation of scales between the\nneutrino energy and the proton mass ($\\sim{\\rm GeV}$), and the electron mass\nand soft-photon detection thresholds ($\\sim{\\rm MeV}$) introduces large\nlogarithms in the perturbative expansion. The resulting flavor differences\nexceed the percent-level experimental precision, and depend on nonperturbative\nhadronic structure. We establish a novel factorization theorem for exclusive\ncharged-current (anti)neutrino scattering cross sections. The first flavor\nuniversal factor depends on hadron and nuclear structure and can be constrained\nby high-statistics $\\nu_\\mu$ data. The second factor is non-universal and\ncontains logarithmic enhancements, but can be calculated exactly in\nperturbation theory. We demonstrate the cancellation of uncertainties in the\npredicted ratio of $\\nu_e$ and $\\nu_\\mu$ cross sections. We point out the\npotential impact of non-collinear energetic photons and the distortion of the\nvisible lepton spectra, and provide precise predictions for fully inclusive\nobservables.", "Coherent control and distinguishability of quantum channels via\n PBS-diagrams\n We introduce a graphical language for coherent control of general quantum\nchannels inspired by practical quantum optical setups involving polarising beam\nsplitters (PBS). As standard completely positive trace preserving maps are\nknown not to be appropriate to represent coherently controlled quantum\nchannels, we propose to instead use purified channels, an extension of\nStinespring's dilation. We characterise the observational equivalence of\npurified channels in various coherent-control contexts, paving the way towards\na faithful representation of quantum channels under coherent control.", "Radiation of a relativistic electron with non-equilibrium own Coulomb\n field\n The condition and specific features of non-dipole regime of radiation is\ndiscussed in connection with the results of recent CERN experiment NA63 on\nmeasurement of radiation power spectrum of $149\\,$GeV electrons in thin\ntantalum targets. The first experimental detection of logarithmic dependence of\nradiation yield from the target thickness is the conclusive evidence of the\neffect of radiation suppression in a thin layer of matter, which was predicted\nmany years ago, and which is the direct manifestation of radiation of\nrelativistic electron with non-equilibrium own Coulomb field. The special\nfeatures of angular distribution of radiation and its polarization in a thin\ntarget at non-dipole regime are proposed for a new experimental study.", "Proton structure in the hyperfine splitting of muonic hydrogen\n We present the leading-order prediction of baryon chiral perturbation theory\nfor the proton polarizability contribution to the 2S hyperfine splitting in\nmuonic hydrogen, and compare with the results of dispersive calculations.", "Linear Stark Shifts to Measure the Fr Weak Nuclear Charge with Small\n Atom Samples\n We study the chirality of ground-state alkali atoms in E and B fields,\ndressed with a circularly-polarized laser beam close-detuned from an\nE-field-assisted forbidden transition, such as 7S-8S in Fr. We predict a parity\nviolating energy shift of their sublevels, linear in E, and the weak nuclear\ncharge Q_W$. A dressing beam of 10 kW/cm$^2$ at 506 nm produces a shift of\n$\\sim100 \\mu$Hz at E=100 V/cm, B $\\gtrsim$30 mG. It should be observable with\n$\\sim 10^4$ Fr atoms confined in an optical dipole trap. We discuss optimal\nconditions, parameter reversals and a calibration procedure to measure $Q_W$.", "Strained Layer Crystalline Undulator\n Ultrarelativistic charged particles are predicted to emit hard\nelectromagnetic radiation of undulator type while being channeled in a crystal\nwith periodically bent crystallographic planes. The recently proposed\ncrystalline undulator with the bending amplitude smaller than the distance\nbetween the bent planes and the bending period shorter than the period of\nchanneling oscillations is far superior to what was proposed previously. In the\nsame time, it is more challenging from the technical point of view because its\nbending period has to be in the sub-micron range. It is shown that a mixed\ncrystal of silicon-germanium with properly varying germanium fraction can have\nthe necessary bending parameters. Moreover, it is predicted to be stable\nagainst misfit dislocations.", "Probing the nucleon's transversity and the photon's distribution\n amplitude in lepton pair photoproduction\n We describe a new way to access the chiral odd transversity parton\ndistribution in the proton through the photoproduction of lepton pairs. The\nbasic ingredient is the interference of the usual Bethe Heitler or Drell-Yan\namplitudes with the amplitude of a process, where the photon couples to quarks\nthrough its chiral-odd distribution amplitude, which is normalized to the\nmagnetic susceptibility of the QCD vacuum. A promising phenomenology of single\nand double spin observables emerges from the unusual features of this\namplitude.", "The European Spallation Source neutrino Super Beam\n In this Snowmass 2021 white paper, we summarise the Conceptual Design of the\nEuropean Spallation Source neutrino Super Beam (ESSvSB) experiment and its\nsynergies with the possible future muon based facilities, e.g. a Low Energy\nnuSTORM and the Muon Collider. The ESSvSB will benefit from the high power, 5\nMW, of the European Spallation Source (ESS) LINAC in Lund-Sweden to produce the\nworld most intense neutrino beam, enabling measurements to be made at the\nsecond oscillation maximum. Assuming a ten-year exposure, physics simulations\nshow that the CP-invariance violation can be established with a significance of\n5 sigma over more than 70% of all values of delta CP and with an error in the\nmeasurement of the delta CP angle of less than 8 degree for all values of delta\nCP.\n However, several technological and physics challenges must be further studied\nbefore achieving a final Technical Design. Measuring at the 2nd oscillation\nmaximum necessitates a very intense neutrino beam with the appropriate energy.\nFor this, the ESS proton beam LINAC, which is designed to produce the world's\nmost intense neutron beam, will need to be upgraded to 10 MW power, 2.5 GeV\nenergy and 28 Hz beam pulse repetition rate. An accumulator ring will be\nrequired for the compression of the ESS LINAC beam pulse from 2.86 ms to 1.3\nmus. A high power target station facility will be needed to produce a\nwell-focused intense (super) mu-neutrino beam. The physics performance of that\nneutrino Super Beam in conjunction with a megaton underground Water Cherenkov\nneutrino far detector installed at a distance of either 360 km or 540 km from\nthe ESS, the baseline, has been evaluated.", "An Integrated Tracker for STAR\n The STAR experiment at the Relativistic Heavy Ion Collider RHIC studies the\nnew state of matter produced in relativistic heavy ion collisions and the spin\nstructure of the nucleon in collisions of polarized protons. In order to\nimprove the capabilities for heavy flavor measurements and the reconstruction\nof charged vector bosons an upgrade of the tracking system both in the central\nand the forward region is pursued. The integrated system providing high\nresolution tracking and secondary vertex reconstruction capabilities will use\nsilicon pixel, strip and GEM technology.", "Design of the Ess RFQs and Chopping Line\n The chopping line is a critical part of the ESS linac in term of technical\nrealisation of the choppers and preservation of the beam qualities. A new\noptimised design of the ESS RFQs and chopping lines is reported. The beam\ndynamics has been optimised with H- beam currents up to 100-mA to have safety\nmargin with respect to the ESS goals. The first RFQ transmits almost 99.7% of\nthe beam up to 2 MeV. The line with two choppers allows a perfect chopping\nbetween 2 bunches. The second RFQ accelerates the particles up to 5 MeV with a\ntransmission close to 100%.", "The LOFAR Magnetism Key Science Project\n Measuring radio waves at low frequencies offers a new window to study cosmic\nmagnetism, and LOFAR is the ideal radio telescope to open this window widely.\nThe LOFAR Magnetism Key Science Project (MKSP) draws together expertise from\nmultiple fields of magnetism science and intends to use LOFAR to tackle\nfundamental questions on cosmic magnetism by exploiting a variety of\nobservational techniques. Surveys will provide diffuse emission from the Milky\nWay and from nearby galaxies, tracking the propagation of long-lived cosmic-ray\nelectrons through magnetic field structures, to search for radio halos around\nspiral and dwarf galaxies and for magnetic fields in intergalactic space.\nTargeted deep-field observations of selected nearby galaxies and suspected\nintergalactic filaments allow sensitive mapping of weak magnetic fields through\nRotation Measure (RM) grids. High-resolution observations of protostellar jets\nand giant radio galaxies reveal structures on small physical scales and at high\nredshifts, whilst pulsar RMs map large-scale magnetic structures of the\nGalactic disk and halo in revolutionary detail. The MKSP is responsible for the\ndevelopment of polarization calibration and processing, thus widening the\nscientific power of LOFAR.", "The POlarised GLEAM Survey (POGS) I: First Results from a Low-Frequency\n Radio Linear Polarisation Survey of the Southern Sky\n The low-frequency polarisation properties of radio sources are poorly\nstudied, particularly in statistical samples. However, the new generation of\nlow-frequency telescopes, such as the Murchison Widefield Array (MWA; the\nprecursor for the low-frequency component of the Square Kilometre Array) offers\nan opportunity to probe the physics of radio sources at very low radio\nfrequencies. In this paper, we present a catalogue of linearly-polarised\nsources detected at 216 MHz, using data from the Galactic and Extragalactic\nAll-sky MWA (GLEAM) survey. Our catalogue covers the Declination range\n$-17^{\\circ}$ to $-37^{\\circ}$ and 24 hours in Right Ascension, at a resolution\nof around 3 arcminutes. We detect 81 sources (including both a known pulsar and\nnew pulsar candidate) with linearly-polarised flux densities in excess of 18\nmJy across a survey area of approximately 6400 square degrees, corresponding to\na surface density of 1 source per 79 square degrees. The level of Faraday\nrotation measured for our sources is broadly consistent with those recovered at\nhigher frequencies, with typically more than an order of magnitude improvement\nin the uncertainty compared to higher-frequency measurements. However, our\ncatalogue is likely incomplete at low Faraday rotation measures, due to our\npractice of excluding sources in the region where instrumental leakage appears.\nThe majority of sources exhibit significant depolarisation compared to higher\nfrequencies; however, a small sub-sample repolarise at 216 MHz. We also discuss\nthe polarisation properties of four nearby, large-angular-scale radio galaxies,\nwith a particular focus on the giant radio galaxy ESO 422$-$G028, in order to\nexplain the striking differences in polarised morphology between 216 MHz and\n1.4 GHz.", "PDFSense: Mapping the PDF sensitivity of future facilities (HL-LHC,\n LHeC, and EIC)\n Particle and nuclear physics are moving toward a new generation of\nexperiments to stress-test the Standard Model (SM), search for novel degrees of\nfreedom, and comprehensively map the internal structure of hadrons. Due to the\ncomplex nature of QCD and wide array of past, present, and possible future\nexperiments, measurements taken at these next-generation facilities will\ninhabit an expansive space of high-energy data. Maximizing the impact of each\nfuture collider program will depend on identifying its place within this\nsprawling landscape. As an initial exploration, we use the recently-developed\nPDFSense framework to assess the PDF sensitivity of two future high-energy\nfacilities --- the high-luminosity upgrade to the LHC (HL-LHC) and the Large\nHadron-electron Collider (LHeC) proposal --- as well as the electron-ion\ncollider (EIC) proposed to map the few-GeV quark-hadron transition region. We\nreport that each of these experimental facilities occupies a unique place in\nthe kinematical parameter space with specialized pulls on particular collinear\nquantities. As such, there is a clear complementarity among these programs,\nwith an opportunity for each to mutually reinforce and inform the others.", "Atom Interferometry with up to 24-Photon-Momentum-Transfer Beam\n Splitters\n We present up to 24-photon Bragg diffraction as a beam splitter in\nlight-pulse atom interferometers to achieve the largest splitting in momentum\nspace so far. Relative to the 2-photon processes used in the most sensitive\npresent interferometers, these large momentum transfer beam splitters increase\nthe phase shift 12-fold for Mach-Zehnder (MZ-) and 144-fold for Ramsey-Borde\n(RB-) geometries. We achieve a high visibility of the interference fringes (up\nto 52% for MZ or 36% for RB) and long pulse separation times that are possible\nonly in atomic fountain setups. As the atom's internal state is not changed,\nimportant systematic effects can cancel.", "Back-to-back relative-excess observable in search for the chiral\n magnetic effect\n $\\textbf{Background:}$ The chiral magnetic effect (CME) is extensively\nstudied in heavy-ion collisions at RHIC and LHC. In the commonly used reaction\nplane (RP) dependent, charge dependent azimuthal correlator ($\\Delta\\gamma$),\nboth the close and back-to-back pairs are included. Many backgrounds contribute\nto the close pairs (e.g. resonance decays, jet correlations), whereas the\nback-to-back pairs are relatively free of those backgrounds.\n $\\textbf{Purpose:}$ In order to reduce those backgrounds, we propose a new\nobservable which only focuses on the back-to-back pairs, namely, the relative\nback-to-back opposite-sign (OS) over same-sign (SS) pair excess\n($r_{\\text{BB}}$) as a function of the pair azimuthal orientation with respect\nto the RP ($\\varphi_{\\text{BB}}$).\n $\\textbf{Methods:}$ We use analytical calculations and toy model simulations\nto demonstrate the sensitivity of $r_{\\text{BB}}(\\varphi_{\\text{BB}})$ to the\nCME and its insensitivity to backgrounds.\n $\\textbf{Results:}$ With finite CME, the $\\varphi_{\\text{BB}}$ distribution\nof $r_{\\text{BB}}$ shows a clear characteristic modulation. Its sensitivity to\nbackground is significantly reduced compared to the previous $\\Delta\\gamma$\nobservable. The simulation results are consistent with our analytical\ncalculations.\n $\\textbf{Conclusions:}$ Our studies demonstrate that the\n$r_{\\text{BB}}(\\varphi_{\\text{BB}})$ observable is sensitive to the CME signal\nand rather insensitive to the resonance backgrounds.", "Novel Method of Measuring Electron Positron Colliding Beam Parameters\n Through the simultaneous measurement of the transverse size as a function of\nlongitudinal position, and the longitudinal distribution of luminosity, we are\nable to measure the $\\beta_y^\\ast$ (vertical envelope function at the collision\npoint), vertical emittance, and bunch length of colliding beams at the Cornell\nElectron-positron Storage Ring (CESR). This measurement is possible due to the\nsignificant ``hourglass'' effect at CESR and the excellent tracking resolution\nof the CLEO detector.", "Magnetic Tip Trap System\n We report a detailed theoretical model of recently-demonstrated magnetic trap\nsystem based on a pair of magnetic tips. The model takes into account key\nparameters such as tip diameter, facet angle and gap separation. It yields\nquantitative descriptions consistent with experiments such as the vertical and\nradial frequency, equilibrium position and the optimum facet angle that\nproduces the strongest confinement. We arrive at striking conclusions that a\nmaximum confinement enhancement can be achieved at an optimum facet angle\n$\\theta_{max}=\\arccos{\\sqrt{2/3}}$ and a critical gap exists beyond which this\nenhancement effect no longer applies. This magnetic trap and its theoretical\nmodel serves as a new and interesting example of a simple and elementary\nmagnetic trap in physics.", "Beam-Based Alignment of the NuMI Target Station Components at FNAL\n The Neutrinos at the Main Injector (NuMI) facility is a conventional\nhorn-focused neutrino beam which produces muon neutrinos from a beam of mesons\ndirected into a long evacuated decay volume. The relative alignment of the\nprimary proton beam, target, and focusing horns affects the neutrino energy\nspectrum delivered to experiments. This paper describes a check of the\nalignment of these components using the proton beam.", "In-Medium Properties of Hadrons - Observables II\n In this review we discuss the observable consequences of in-medium changes of\nhadronic properties in reactions with elementary probes, and in particular\nphotons, on nuclei. After an outline of the theoretical method used we focus on\na discussion of actual observables in photonuclear reactions; we discuss in\ndetail $2\\pi$- and vector-meson production. We show that the $2\\pi^0$\nphotoproduction data can be well described by final state interactions of the\npions produced whereas the semi-charged $\\pi^0\\pi^\\pm$ channel exhibits a major\ndiscrepancy with theory. For $\\omega$ production on nuclei in the TAPS/CB@ELSA\nexperiment we analyse the $\\pi^0\\gamma$ decay channel, and illustrate the\nstrength of the method by simulating experimental acceptance problems.\nCompletely free of final state interactions is dilepton production in the few\nGeV range. We show that the sensitivity of this decay channel to changes of\nhadronic properties in medium in photonuclear reactions on nuclei is as large\nas in ultrarelativistic heavy ion collisions and make predictions for the\non-going G7 experiment at JLAB. Finally we discuss that hadron production in\nnuclei at 10 -- 20 GeV photon energies can give important information on the\nhadronization process, and in particular on the time-scales involved. We show\nhere detailed calculations for the low-energy (12 GeV) run at HERMES and\npredictions for planned experiments at JLAB.", "Numerical Evaluation of the Relativistic Magnetized Plasma\n Susceptibility Tensor and Faraday Rotation Coefficients\n Polarized models of relativistically hot astrophysical plasmas require\ntransport coefficients as input: synchrotron absorption and emission\ncoefficients in each of the four Stokes parameters, as well as three Faraday\nrotation coefficients. Approximations are known for all coefficients for a\nsmall set of electron distribution functions, such as the Maxwell-Juttner\nrelativistic thermal distribution, and a general procedure has been obtained by\nHuang & Shcherbakov for an isotropic distribution function. Here we provide an\nalternative general procedure, with a full derivation, for calculating\nabsorption and rotation coefficients for an arbitrary isotropic distribution\nfunction. Our method involves the computation of the full plasma susceptibility\ntensor, which in addition to absorption and rotation coefficients may be used\nto determine plasma modes and the dispersion relation. We implement the scheme\nin a publicly available library with a simple interface, thus allowing for easy\nincorporation into radiation transport codes. We also provide a comprehensive\nsurvey of the literature and comparison with earlier results.", "Emittance preservation of an electron beam in a loaded quasi-linear\n plasma wakefield\n We investigate beam loading and emittance preservation for a high-charge\nelectron beam being accelerated in quasi-linear plasma wakefields driven by a\nshort proton beam. The structure of the studied wakefields are similar to those\nof a long, modulated proton beam, such as the AWAKE proton driver. We show that\nby properly choosing the electron beam parameters and exploiting two well known\neffects, beam loading of the wakefield and full blow out of plasma electrons by\nthe accelerated beam, the electron beam can gain large amounts of energy with a\nnarrow final energy spread (%-level) and without significant emittance growth.", "Recoil imaging for dark matter, neutrinos, and physics beyond the\n Standard Model\n Recoil imaging entails the detection of spatially resolved ionization tracks\ngenerated by particle interactions. This is a highly sought-after capability in\nmany classes of detector, with broad applications across particle and\nastroparticle physics. However, at low energies, where ionization signatures\nare small in size, recoil imaging only seems to be a practical goal for\nmicro-pattern gas detectors. This white paper outlines the physics case for\nrecoil imaging, and puts forward a decadal plan to advance towards the\ndirectional detection of low-energy recoils with sensitivity and resolution\nclose to fundamental performance limits. The science case covered includes: the\ndiscovery of dark matter into the neutrino fog, directional detection of\nsub-MeV solar neutrinos, the precision study of coherent-elastic\nneutrino-nucleus scattering, the detection of solar axions, the measurement of\nthe Migdal effect, X-ray polarimetry, and several other applied physics goals.\nWe also outline the R&D programs necessary to test concepts that are crucial to\nadvance detector performance towards their fundamental limit: single primary\nelectron sensitivity with full 3D spatial resolution at the $\\sim$100\nmicron-scale. These advancements include: the use of negative ion drift,\nelectron counting with high-definition electronic readout, time projection\nchambers with optical readout, and the possibility for nuclear recoil tracking\nin high-density gases such as argon. We also discuss the readout and\nelectronics systems needed to scale-up such detectors to the ton-scale and\nbeyond.", "Measurement of the transverse single-spin asymmetry in $p^\\uparrow+p \\to\n W^{\\pm}/Z^0$ at RHIC\n We present the measurement of the transverse single-spin asymmetry of weak\nboson production in transversely polarized proton-proton collisions at\n$\\sqrt{s} = 500~\\text{GeV}$ by the STAR experiment at RHIC. The measured\nobservable is sensitive to the Sivers function, one of the transverse momentum\ndependent parton distribution functions, which is predicted to have the\nopposite sign in proton-proton collisions from that observed in deep inelastic\nlepton-proton scattering. These data provide the first experimental\ninvestigation of the non-universality of the Sivers function, fundamental to\nour understanding of QCD.", "High-fidelity spatial and polarization addressing of Ca-43 qubits using\n near-field microwave control\n Individual addressing of qubits is essential for scalable quantum\ncomputation. Spatial addressing allows unlimited numbers of qubits to share the\nsame frequency, whilst enabling arbitrary parallel operations. We demonstrate\naddressing of long-lived $^{43}\\text{Ca}^+$ \"atomic clock\" qubits held in\nseparate zones ($960\\mu$m apart) of a microfabricated surface trap with\nintegrated microwave electrodes. Such zones could form part of a \"quantum CCD\"\narchitecture for a large-scale quantum information processor. By coherently\ncancelling the microwave field in one zone we measure a ratio of Rabi\nfrequencies between addressed and non-addressed qubits of up to 1400, from\nwhich we calculate a spin-flip probability on the qubit transition of the\nnon-addressed ion of $1.3\\times 10^{-6}$. Off-resonant excitation then becomes\nthe dominant error process, at around $5 \\times 10^{-3}$. It can be prevented\neither by working at higher magnetic field, or by polarization control of the\nmicrowave field. We implement polarization control with error $2 \\times\n10^{-5}$, which would suffice to suppress off-resonant excitation to the $\\sim\n10^{-9}$ level if combined with spatial addressing. Such polarization control\ncould also enable fast microwave operations.", "Sterile neutrino searches at tagged kaon beams\n Tagged kaon beams are attractive neutrino sources, which would provide flavor\npure $\\nu_e$-beams with exactly measured normalization. We point out that this\nalso leads to an anti-tagged flavor pure $\\nu_\\mu$-beam, with equally well\nknown normalization. Exposing a 1 kt liquid argon detector at a baseline of 1\nkm to this combination of unique beams allows to decisively test recent\nindications by IceCube and Neutrino-4 of sterile neutrino oscillations in the\nmulti-eV range.", "Measurement of the Generalized Polarizabilities of the Proton at\n Intermediate $Q^2$\n Background: Generalized polarizabilities (GPs) are important observables to\ndescribe the nucleon structure, and measurements of these observables are still\nscarce. Purpose: This paper presents details of a virtual Compton scattering\n(VCS) experiment, performed at the A1 setup at the Mainz Microtron by studying\nthe $e p \\to e p \\gamma$ reaction. The article focuses on selected aspects of\nthe analysis. Method: The experiment extracted the $P_{LL} -P_{TT} / \\epsilon$\nand $P_{LT}$ structure functions, as well as the electric and magnetic GPs of\nthe proton, at three new values of the four-momentum transfer squared $Q^2$:\n0.10, 0.20 and 0.45 GeV$^2$. Results: We emphasize the importance of the\ncalibration of experimental parameters. The behavior of the measured $e p \\to e\np \\gamma$ cross section is presented and compared to the theory. A detailed\ninvestigation of the polarizability fits reveals part of their complexity, in\nconnection with the higher-order terms of the low-energy expansion.\nConclusions: The presented aspects are elements which contribute to minimize\nthe systematic uncertainties and improve the precision of the physics results.", "Performance test of wavelength-shifting acrylic plastic Cherenkov\n detector\n The collection efficiency for Cherenkov light incident on a wavelength\nshifting plate (WLS) has been determined during a beam test at the Proton\nSynchrotron facility located in the National Laboratory for High Energy Physics\n(KEK), Tsukuba, Japan. The experiment was conducted in order to determine the\ndetector's response to photoelectrons converted from photons produced by a\nfused silica radiator; this allows for an approximation of the detector's\nquality. The yield of the photoelectrons produced through internally generated\nCherenkov light as well as light incident from the radiator was measured as a\nfunction of the momentum of the incident hadron beam. The yield is proportional\nto sin$^2$$\\theta_c$, where $\\theta_{c}$ is the opening angle of the Cherenkov\nlight created. Based on estimations and results from similarly conducted tests,\nwhere the collection efficiency was roughly 39%, the experimental result was\nexpected to be around 40% for internally produced light from the WLS. The\nresults of the experiment determined the photon collection response efficiency\nof the WLS to be roughly 62% for photons created in a fused silica radiator and\n41% for light created in the WLS.", "Mitigation of the spectral dependent polarization angle response for\n achromatic half-wave plate\n Polarimetry using a half-wave plate (HWP) modulator provides the strong tools\nto avoid a detector 1/f noise and instrument-originated spurious polarization\nsystematic effects. While the Pancharatnam achromatic HWP (AHWP) is commonly\nused for an application that needs a broadband frequency coverage, this\ntechnique introduces a frequency-dependent polarization angle rotation. In this\npaper we propose a new technique to mitigate this effect by introducing a\nsecond set of an AHWP. One rotational and one stationary set of AHWPs achieve a\nbroadband coverage of modulation efficiency without the frequency-dependent\npolarization angle rotation. We conducted measurements by using three layers of\nsapphire wave plates and demonstrated this technique at millimeter wavelengths\nbetween 72 and 162 GHz. We also discuss a potential application in the CMB\npolarization experiment based on numerical simulations.", "Photon-photon physics at the LHC and laser beam experiments, present and\n future\n Under certain running conditions, the CERN Large Hadron Collider (LHC) can be\nconsidered as a photon-photon collider. Indeed, in proton-proton, proton-ion,\nion-ion collisions, when incoming particles pass very close to each other in\nvery peripheral collisions, the incoming protons or ions remain almost intact\nand continue their path along the beam axis. Then, only the electromagnetic\n(EM) fields of these ultra-relativistic charged particles (protons or ions)\ninteract to leave a signature in the central detectors of the LHC experiments.\nThe interest is that the photon-photon interactions happen at unprecedented\nenergies (a few TeV per nucleon pairs) where the quantum electrodynamics (QED)\ntheory can be tested in extreme conditions and unforeseen laws of nature could\nbe discovered. In this report, we propose a focus on a particular reaction,\ncalled light-by-light scattering in which two incoming photons interact,\nproducing another pair of photons. We describe how experimental results have\nbeen obtained at the LHC. In addition, we discuss prospects for on-shell\nphoton-photon interactions in dedicated laser beam facilities. Potential\nsignatures of new physics might manifest as resonant deviations in the\nrefractive index, induced by anomalous light-by-light scattering effects.\nImportantly, we explain how this process can be used to probe the physics\nbeyond the standard model such as theories that include large extra dimensions.\nFinally, some perspectives and ideas are given for future data taking or\nexperiments.", "A Stern-Gerlach experiment with light: separating photons by spin with\n the method of A. Fresnel\n In 1822 A. Fresnel described an experiment to separate a beam of light into\nits right- and left- circular polarization components using chiral interfaces.\nFresnel's experiment combined three crystalline quartz prisms of alternating\nhandedness to achieve a visible macroscopic separation between the two circular\ncomponents. Such quartz polyprisms were rather popular optical components in\nXIXth century but today remain as very little known optical devices. This work\nshows the analogy between Fresnel's experiment and Stern-Gerlach experiment\nfrom quantum mechanics since both experiments produce selective deflection of\nparticles (photons in case of Fresnel's method) according to their spin angular\nmomentum. We have studied a historical quartz polyprism with eight chiral\ninterfaces producing a large spatial separation of light by spin. We have also\nconstructed a modified Fresnel biprism to produce smaller separations and we\nhave illustrated the process of weak measurement for light. The polarimetric\nanalysis of a Fresnel polyprism reveals that it acts as a spin angular momentum\nanalyzer.", "Determination of the Charge per Micro-Bunch of a Self-Modulated Proton\n Bunch using a Streak Camera\n The Advanced Wakefield Experiment (AWAKE) develops the first plasma wakefield\naccelerator with a high-energy proton bunch as driver. The 400GeV bunch from\nCERN Super Proton Synchrotron (SPS) propagates through a 10m long rubidium\nplasma, ionized by a 4TW laser pulse co-propagating with the proton bunch. The\nrelativistic ionization front seeds a self-modulation process. The seeded\nself-modulation transforms the bunch into a train of micro-bunches resonantly\ndriving wakefields. We measure the density modulation of the bunch, in time,\nwith a streak camera with picosecond resolution. The observed effect\ncorresponds to alternating focusing and defocusing fields. We present a\nprocedure recovering the charge of the bunch from the experimental streak\ncamera images containing the charge density. These studies are important to\ndetermine the charge per micro-bunch along the modulated proton bunch and to\nunderstand the wakefields driven by the modulated bunch.", "Electron-Positron Collider Design -- simulations from long proton driven\n beam to 125GeV witness electron and positron bunches\n In this paper, the feasibility of the electron-positron collider based on\nplasma accelerator is proved by simulation experiments. Starting from the\n17.612cm proton beam provided by SPS (super proton synchrotron), the simulation\nshows that the long proton beam can form several high quality proton bunches\nthrough seeded self-modulation in the first half of the long proton beam in a\nuniform plasma. Then we use these high-quality bunches to excite the wakefield\nin a uniform plasma and accelerate witness positrons and witness electrons. The\nsimulation results show that the average energy of witness bunches after about\n90 meters acceleration is about 125 GeV, and the average acceleration gradient\nis about 1.3 GeV/m. The center-of-mass (CoM) energy of positron-electron\ncollision is about 125 GeV. The energy spread, witness particle survival rate,\nemittances and luminorsity of the output witness bunches are also discussed.", "Generation and detection of NOON states in superconducting circuits\n NOON states, states between two modes of light of the form\n$|N,0\\rangle+e^{i\\phi}|0,N\\rangle$ allow for super-resolution interformetry. We\nshow how NOON states can be efficiently produced in circuit quntum\nelectrodynamics using superconducting phase qubits and resonators. We propose a\nprotocol where only one interaction between the two modes is required, creating\nall the necessary entanglement at the start of the procedure. This protocol\nmakes active use of the first three states of the phase qubits. Additionally,\nwe show how to efficiently verify the success of such an experiment, even for\nlarge NOON states, using randomly sampled measurements and semidefinite\nprogramming techniques.", "Beyond CMB cosmic variance limits on reionization with the polarized SZ\n effect\n Upcoming cosmic microwave background (CMB) surveys will soon make the first\ndetection of the polarized Sunyaev-Zel'dovich effect, the linear polarization\ngenerated by the scattering of CMB photons on the free electrons present in\ncollapsed objects. Measurement of this polarization along with knowledge of the\nelectron density of the objects allows a determination of the quadrupolar\ntemperature anisotropy of the CMB as viewed from the space-time location of the\nobjects. Maps of these remote temperature quadrupoles have several cosmological\napplications. Here we propose a new application: reconstruction of the\ncosmological reionization history. We show that with quadrupole measurements\nout to redshift 3, constraints on the mean optical depth can be improved by an\norder of magnitude beyond the CMB cosmic variance limit.", "Angular Analysis of \\boldmath $\\Lambda_b\\to \\Lambda_c (\\to \\Lambda\n \\pi)\\ell\\bar\\nu$\n We revisit the decay $\\Lambda_b^0\\to \\Lambda_c^+ \\ell^-\\bar\\nu$ ($\\ell =\ne,\\mu,\\tau$) with a subsequent two-body decay $\\Lambda_c^+ \\to \\Lambda^0 \\pi^+$\nin the Standard Model and in generic New Physics models. The decay's joint\nfour-differential angular distribution can be expressed in terms of ten angular\nobservables, assuming negligible polarization of the initial $\\Lambda_b$ state.\nWe present compact analytical results for all angular observables, which\nenables us to discuss their possible New Physics reach. We find that the decay\nat hand probes more and complementary independent combinations of Wilson\ncoefficients compared to its mesonic counter parts $\\bar{B}\\to\nD^{(*)}\\ell^-\\bar\\nu$. Our result for the angular distribution is at variance\nwith some of the results on scalar-vector interference terms in the literature.\nWe provide numerical estimates for all angular observables based on lattice-QCD\nresults for the $\\Lambda_b \\to \\Lambda_c$ form factors and account for a recent\nmeasurement of the parity-violating parameter in $\\Lambda_c^+\\to\n\\Lambda^0\\pi^+$ decays by BESIII. A numerical implementation of our results is\nmade publicly available as part of the EOS software.", "Polarimetry of optically selected BL Lac candidates from the SDSS\n We present and discuss polarimetric observations of 182 targets drawn from an\noptically selected sample of 240 probable BL Lac candidates out of the SDSS\ncompiled by Collinge et al. (2005). In contrast to most other BL Lac candidate\nsamples extracted from the SDSS, its radio- and/or X-ray properties have not\nbeen taken into account for its derivation. Thus, because its selection is\nbased on optical properties alone, it may be less prone to selection effects\ninherent in other samples derived at different frequencies, so it offers a\nunique opportunity to extract the first unbiased BL Lac luminosity function\nthat is suitably large in size.\n We found 124 out of 182 targets (68%) to be polarized, 95 of the polarized\ntargets (77%) to be highly polarized (> 4%). The low-frequency peaked BL Lac\ncandidates in the sample are on average only slightly more polarized than the\nhigh-frequency peaked ones. Compared to earlier studies, we found a high duty\ncycle in high polarization (~66 +2/-14% to be > 4% polarized) in high-frequency\npeaked BL Lac candidates. This may come from our polarization analysis, which\nminimizes the contamination by host galaxy light.\n No evidence of radio-quiet BL Lac objects in the sample was found.\n Our observations show that the probable sample of BL Lac candidates of\nCollinge et al. (2005) indeed contains a large number of bona fide BL Lac\nobjects. High S/N spectroscopy and deep X-ray observations are required to\nconstruct the first luminosity function of optically selected BL Lac objects\nand to test more stringently for any radio-quiet BL Lac objects in the sample.", "TeV mu Neutrinos from Young Neutron Stars\n Neutron stars are efficient accelerators for bringing charges up to\nrelativistic energies. We show that if positive ions are accelerated to ~1 PeV\nnear the surface of a young neutron star (t_age < about 10^5 yr), protons\ninteracting with the star's radiation field will produce beamed mu neutrinos\nwith energies of ~50 TeV that could produce the brightest neutrino sources at\nthese energies yet proposed. These neutrinos would be coincident with the radio\nbeam, so that if the star is detected as a radio pulsar, the neutrino beam will\nsweep the Earth; the star would be a ``neutrino pulsar''. Looking for muon\nneutrino emission from young neutron stars will provide a valuable probe of the\nenergetics of the neutron star magnetosphere.", "Electric and magnetic axion quark nuggets, their stability and their\n detection\n The present work studies the dynamics of axion quark nuggets introduced in\n\\cite{zhitnitsky} and exploited in the works\n\\cite{zhitnitsky2}-\\cite{zhitnitsky13}. The new feature considered here is the\npossibility that these nuggets become ferromagnetic. This possibility was\npointed out in \\cite{tatsumi}, although ferromagnetism may also take place due\nsome anomaly terms found in \\cite{son}-\\cite{son2}. The purpose of the present\nletter however, is not to give evidence in favor or against these statements.\nInstead, it is focused in some direct consequences of this ferromagnetic\nbehavior, if it exists. The first is that the nugget magnetic field induces an\nelectric field due to the axion wall, which may induce pair production by\nSchwinger effect. Depending on the value of the magnetic field, the pair\nproduction can be quite large. A critical value for such magnetic field at the\nsurface of the nugget is obtained, and it is argued that the value of the\nmagnetic field of \\cite{tatsumi} is at the verge of stability and may induce\nlarge pair production. The consequences of this enhanced pair production may be\nunclear. It may indicate that the the nugget evaporates, but on the other hand\nit may be just an indication that the intrinsic magnetic field disappears and\nthe nuggets evolves to a non magnetized state such as\n\\cite{zhitnitsky}-\\cite{zhitnitsky13}. The interaction of such magnetic and\nelectric nugget with the troposphere of the earth is also analyzed. However, if\nthe magnetic field does not decay before the actual universe, then this would\nlead to high energy electron flux due to its interaction with the electron\ngases of the Milky Way. This suggests that these magnetized quarks may be a\nconsiderably part of dark matter, but only if their hypothetical magnetic and\nelectric fields are evaporated.", "Accurate polarization preparation and measurement using twisted nematic\n liquid crystals\n Generation of particular polarization states of light, encoding information\nin polarization degree of freedom, and efficient measurement of unknown\npolarization are the key tasks in optical metrology, optical communications,\npolarization-sensitive imaging, and photonic information processing. Liquid\ncrystal devices have proved to be indispensable for these tasks, though their\nlimited precision and the requirement of a custom design impose a limit of\npractical applicability. Here we report fast preparation and detection of\npolarization states with unprecedented accuracy using liquid-crystal cells\nextracted from common twisted nematic liquid-crystal displays. To verify the\nperformance of the device we use it to prepare dozens of polarization states\nwith average fidelity 0.999(1) and average angle deviation 0.5(3) deg. Using\nfour-projection minimum tomography as well as six-projection Pauli measurement,\nwe measure polarization states employing the reported device with the average\nfidelity of 0.999(1). Polarization measurement data are processed by the\nmaximum likelihood method to reach a valid estimate of the polarization state.\nIn addition to the application in classical polarimetry, we also employ the\nreported liquid-crystal device for full tomographic characterization of a\nthree-mode Greenberger--Horne--Zeilinger entangled state produced by a photonic\nquantum processor.", "Tunable transverse spin-motion coupling for quantum information\n processing\n Laser-controlled entanglement between atomic qubits (`spins') and collective\nmotion in trapped ion Coulomb crystals requires conditional momentum transfer\nfrom the laser. Since the spin-dependent force is derived from a spatial\ngradient in the spin-light interaction, this force is typically longitudinal --\nparallel and proportional to the average laser $k$-vector (or two beams'\n$k$-vector difference), which constrains both the direction and relative\nmagnitude of the accessible spin-motion coupling. Here, we show how momentum\ncan also be transferred perpendicular to a single laser beam due to the\ngradient in its transverse profile. By controlling the transverse gradient at\nthe position of the ion through beam shaping, the relative strength of the\nsidebands and carrier can be tuned to optimize the desired interaction and\nsuppress undesired, off-resonant effects that can degrade gate fidelity. We\nalso discuss how this effect may already be playing an unappreciated role in\nrecent experiments.", "Chiral-odd generalized parton distributions, transversity decomposition\n of angular momentum, and tensor charges of the nucleon\n The forward limit of the chiral-odd generalized parton distributions (GPDs)\nand their lower moments are investigated within the framework of the chiral\nquark soliton model (CQSM), with particular emphasis upon the transversity\ndecomposition of nucleon angular momentum proposed by Burkardt. A strong\ncorrelation between quark spin and orbital angular momentum inside the nucleon\nis manifest itself in the derived second moment sum rule within the CQSM,\nthereby providing with an additional support to the qualitative connection\nbetween chiral-odd GPDs and the Boer-Mulders effects. We further confirm\nisoscalar dominance of the corresponding first moment sum rule, which indicates\nthat the Boer-Mulders functions for the $u$- and $d$-quarks have roughly equal\nmagnitude with the same sign. Also made are some comments on the recent\nempirical extraction of the tensor charges of the nucleon by Anselmino et al.\nWe demonstrate that a comparison of their result with any theoretical\npredictions must be done with great care, in consideration of fairly strong\nscale dependence of tensor charges, especially at lower renormalization scale.", "Angular momentum of circularly polarized light in dielectric media\n A circularly polarized plane-wave is known to have no angular momentum when\nexamined through Maxwell's equations. This, however, contradicts the\nexperimentally observed facts, where finite segments of plane waves are known\nto be capable of imparting angular momentum to birefringent platelets. Using a\nsuperposition of four plane-waves propagating at slightly different angles to a\ncommon direction, we derive an expression for the angular momentum density of a\nsingle plane-wave in the limit when the propagation directions of the four\nbeams come into alignment. We proceed to use this four-beam technique to\nanalyze the conservation of angular momentum when a plane-wave enters a\ndielectric slab from the free space. The angular momentum of the beam is shown\nto decrease upon entering the dielectric medium, by virtue of the fact that the\nincident beam exerts a torque on the slab surface at the point of entry. When\nthe beam leaves the slab, it imparts an equal but opposite torque to the exit\nfacet, thus recovering its initial angular momentum upon re-emerging into the\nfree-space. Along the way, we derive an expression for the outward-directed\nforce of a normally incident, finite-diameter beam on a dielectric surface; the\npossible relationship between this force and the experimentally observed\nbulging of a liquid surface under intense illumination is explored.", "First Measurement of Differential Charged Current Quasielastic-like\n $\\nu_\\mu$-Argon Scattering Cross Sections with the MicroBooNE Detector\n We report on the first measurement of flux-integrated single differential\ncross sections for charged-current (CC) muon neutrino ($\\nu_\\mu$) scattering on\nargon with a muon and a proton in the final state,\n$^{40}$Ar($\\nu_\\mu$,$\\mu$p)X. The measurement was carried out using the Booster\nNeutrino Beam at Fermi National Accelerator Laboratory and the MicroBooNE\nliquid argon time projection chamber detector with an exposure of 4.59 $\\times$\n10$^{19}$ protons on target. Events are selected to enhance the contribution of\nCC quasielastic (CCQE) interactions. The data are reported in terms of a total\ncross section as well as single differential cross sections in final state muon\nand proton kinematics. We measure the integrated per-nucleus CCQE-like cross\nsection (i.e. for interactions leading to a muon, one proton and no pions above\ndetection threshold) of (4.93 $\\pm$ 0.76stat $\\pm$ 1.29sys) $\\times$\n10$^{-38}$cm$^2$, in good agreement with theoretical calculations. The single\ndifferential cross sections are also in overall good agreement with theoretical\npredictions, except at very forward muon scattering angles that correspond to\nlow momentum-transfer events.", "Installation and Commissioning of the GlueX DIRC\n The GlueX experiment takes place in experimental Hall D at Jefferson Lab\n(JLab). With a linearly polarized photon beam of up to 12 GeV energy, GlueX is\na dedicated experiment to search for hybrid mesons via photoproduction\nreactions. The low-intensity (Phase I) of GlueX was recently completed; the\nhigh-intensity (Phase II) started in 2020 including an upgraded particle\nidentification system, known as the DIRC (Detection of Internally Reflected\nCherenkov light), utilizing components from the decommissioned BaBar\nexperiment. The identification and separation of the kaon final states will\nsignificantly enhance the GlueX physics program, by adding the capability of\naccessing the strange quark flavor content of conventional (and potentially\nhybrid) mesons. In these proceedings, we report that the installation and\ncommissioning of the DIRC detector has been successfully completed.", "On the Rotational Invariance and Non-Invariance of Lepton Angular\n Distributions in Drell-Yan and Quarkonium Production\n Several rotational invariant quantities for the lepton angular distributions\nin Drell-Yan and quarkonium production were derived several years ago, allowing\nthe comparison between different experiments adopting different reference\nframes. Using an intuitive picture for describing the lepton angular\ndistribution in these processes, we show how the rotational invariance of these\nquantities can be readily obtained. This approach can also be used to determine\nthe rotational invariance or non-invariance of various quantities specifying\nthe amount of violation for the Lam-Tung relation. While the violation of the\nLam-Tung relation is often expressed by frame-dependent quantities, we note\nthat alternative frame-independent quantities are preferred.", "Use of the Meta-analysis in the Finding of Singularities of a Nuclear\n Matter Created in Ultrarelativistic Nuclear Collisions\n The published theoretical data of few models (PHSD/HSD both with and without\nchiral symmetry restoration) applied to experimental data from collisions of\nnuclei from SIS to LHC energies, have been analised by using of the\nmeta-analysis what allowed to localize a possible phase singularities of\nnuclear matter created in the central nucleus-nucleus collisions: The ignition\nof the Quark-Gluon Plasma's (QGP) drop begins already at top SIS/BEVALAC\nenergies. This drop of QGP occupies small part, 15$\\%$ (an averaged radius\nabout 5.3 fm if radius of fireball is 10 fm), of the whole volume of a fireball\ncreated at top SIS energies. The drop of exotic matter goes through a split\ntransition (separated boundaries of sharp (1-st order) crossover and chiral\nsymmetry restoration) between QGP and Quarkyonic matter at energy around\n$\\sqrt{s_{NN}}\\,=\\,$3.5 GeV. The boundary of transition between Quarkyonic and\nHadronic matter was localized between $\\sqrt{s_{NN}}\\,=\\,$4.4 and 5.3 GeV and\nit is not being intersected by the phase trajectory of that drop. Critical\nendpoint has been localized at around $\\sqrt{s_{NN}}\\,=\\,$9.3 GeV and a triple\npoint - at around 12 GeV, the boundary of smooth (2-nd order) crossover\ntransition with chiral symmetry restoration between Quarkyonic matter and QGP\nwas localized between $\\sqrt{s_{NN}}\\,=\\,$9.3 and 12 GeV. The phase trajectory\nof a hadronic corona, enveloping the drop, stays always in the hadronic phase.", "Report on Tests and Measurements of Hadronic Interaction Properties with\n Air Showers\n We present a summary of recent tests and measurements of hadronic interaction\nproperties with air showers. This report has a special focus on muon density\nmeasurements. Several experiments reported deviations between simulated and\nrecorded muon densities in extensive air showers, while others reported no\ndiscrepancies. We combine data from eight leading air shower experiments to\ncover shower energies from PeV to tens of EeV. Data are combined using the\nz-scale, a unified reference scale based on simulated air showers.\nEnergy-scales of experiments are cross-calibrated. Above 10 PeV, we find a muon\ndeficit in simulated air showers for each of the six considered hadronic\ninteraction models. The deficit is increasing with shower energy. For the\nmodels EPOS-LHC and QGSJet-II.04, the slope is found significant at 8 sigma.", "High Power, High Energy Cyclotrons for Decay-At-Rest Neutrino Sources:\n The DAEdALUS Project\n Neutrino physics is a forefront topic of today's research. Large detectors\ninstalled underground study neutrino properties using neutrino beams from muons\ndecaying in flight. DAEdALUS looks at neutrinos from stopped muons, \"decay at\nrest\" (DAR) neutrinos. The DAR neutrino spectrum has effectively no electron\nantineutrinos (essentially all pi- are absorbed), so a detector with free\nprotons is sensitive to appearance of nu-e-bar oscillating from nu-mu-bar via\ninverse-beta-decay (IBD). Oscillations are studied using sources relatively\nnear the detector, but which explore the same physics as the high-energy\nneutrino beams from Long Baseline experiments. As the DAR spectrum is fixed,\nthe baseline is varied: plans call for 3 accelerator-based neutrino sources at\n1.5, 8 and 20 km with staggered beam-on times. Compact, cost-effective\nsuperconducting ring cyclotrons accelerating molecular hydrogen ions (H2+) to\n800 MeV/n with stripping extraction are being designed by L. Calabretta and his\ngroup. This revolutionary design could find application in many ADS-related\nfields.", "Modelling challenges of the high power cyclotrons for the\n DAE$\\delta$ALUS project\n Design studies, for accelerator modules based on an injector cyclotron and a\nsuperconducting ring cyclotron able to accelerate H$_2^+$ molecules, are\npresented. H$_2^+$ molecules are stripped by a foil creating a proton beam,\nwith a maximum energy of 800 MeV and a beam power of 8 MW (CW). This beam would\nbe sent to a beam dump where neutrinos would be produced from pion and muon\ndecays at rest for the Decay At rest Experiment for $\\delta_{CP}$ At the\nLaboratory for Underground Science - DAE$\\delta$ALUS. We are discussing the\nadvantage of H$_2^+$ molecules for acceleration and present precise beam\ndynamics simulations w.r.t. extraction and beam losses. In general, beam losses\nare one of the most challenging parts in such a high power cyclotron design and\nmust be addressed very early on in the design. We are also addressing H$_2^+$\ndissociation and the stripping process, two other characteristic challenges in\nthe DAE$\\delta$ALUS design.", "Linear and Circularly Polarized Light to Study Anisotropy and Resonant\n Scattering in Magnetic Thin Films\n The remarkable polarization properties of the synchrotron light have lead to\nthe advent of modern synchrotron-related spectroscopic studies with angular\nand/or magnetic selectivity. We give here an overview of the prominent aspect\nof the polarization of the light delivered by a bending magnet, and some\ndichroic properties in X-ray Absorption Spectroscopy (XAS). We report then two\nstudies developed at the Brazilian Synchrotron Light Laboratory (LNLS),\nexemplifying the profit gained using linear and circular polarization of the\nX-ray for the study of magnetic thin films and multilayers. Angle-resolved XAS\nwas used in strained manganite thin films to certify a model of local\ndistortion limited within the $MnO_{6}$ polyhedron. A pioneer experience of\nX-ray magnetic scattering at grazing incidence associated with dispersive XAS\nin a $Co/Gd$ multilayer draws new perspectives for magnetic studies in thin\nfilms and multilayers in atmospheric conditions in the hard X-ray range.", "The Modeling of Time-Structured Multiturn Injection into Fermilab Main\n Injector (Microbunch Injection with Parasitic Longitudinal Painting)\n This paper presents the modeling of time-structured multiturn injection for\nan upgraded Main Injector with the 8-GeV Superconducting RF proton driver, or\nan ILC-style linac, or a Project-X linac. The Radio-Frequency mismatch between\na linac and the upgraded Main Injector will induce parasitic longitudinal\npainting in RF-phase direction. Several different scenarios with a choice of\ndifferent RF parameters for single RF system and double RF system in the\npresence of longitudinal space charge have been investigated. From the studies\nof microbunch injection with the aid of ESME (2003) numerical simulations, it\nis found that the dual RF system with a choice of appropriate RF parameters\nallows us to overcome the space-charge limitation set by beam intensity during\nthe multiturn-injection process. A double RF system with a harmonic ratio (R_H\n= H_2/H_1) of 2.0 and a voltage ratio (R_V = V_2/V_1) of 0.5 are most favored\nto reduce both longitudinal and transverse effects of space charge in the Main\nInjector.", "System for control of polarization state of light and generation of\n light with continuously rotating linear polarization\n We present a technique for generating light in an arbitrary polarization\nstate. The technique is based on interference of two orthogonally polarized\nlight beams, whose amplitudes and phases are controlled with a Mach-Zehnder\ninteferometer with acousto-optic modulators (AOMs) placed in each arm. We\ndemonstrate that via control over amplitudes, phases, and frequencies of\nacoustic waves driving the AOMs, any polarization state can be synthesized. In\nparticular, we demonstrate generation of linearly polarized light, whose\npolarization plane continuously rotates at a rate from 1~kHz to 1~MHz. Such\nlight finds applications in science (e.g., investigations of Bloch-Siegert\neffect) and technology (optically-pumped magnetometers).", "A stochastic model for the semiclassical collective dynamics of charged\n beams in particle accelerators\n A recent proposal (see quant-ph/9803068) to simulate semiclassical\ncorrections to classical dynamics by suitable classical stochastic fluctuations\nis applied to the specific instance of charged beam dynamics in particle\naccelerators. The resulting picture is that the collective beam dynamics, at\nthe leading semiclassical order in Planck constant can be described by a\nparticular diffusion process, the Nelson process, which is time-reversal\ninvariant. Its diffusion coefficient $\\sqrt{N}\\lambda_{c}$ represents a\nsemiclassical unit of emittance (here $N$ is the number of particles in the\nbeam, and $\\lambda_{c}$ is the Compton wavelength). The stochastic dynamics of\nthe Nelson type can be easily recast in the form of a Schroedinger equation,\nwith the semiclassical unit of emittance replacing Planck constant. Therefore\nwe provide a physical foundation to the several quantum-like models of beam\ndynamics proposed in recent years. We also briefly touch upon applications of\nthe Nelson and Schroedinger formalisms to incorporate the description of\ncollective coherent effects.", "Azimuthal correlations within exclusive dijets with large momentum\n transfer in photon-lead collisions\n The first measurement of the azimuthal angular correlations of exclusively\nproduced events with two jets in photon-lead interactions at large momentum\ntransfer is presented. Theoretical predictions relate such correlations to the\npolarization of gluons within nuclei. This study uses a data sample of\nlead-lead collisions at $\\sqrt{s_\\mathrm{NN}}$ = 5.02 TeV, corresponding to an\nintegrated luminosity of 0.38 nb$^{-1}$, collected with the CMS experiment. One\nof the jets is required to have a transverse momentum above 30 GeV, while that\nof the second is greater than 20 GeV. The measured second harmonic of the\ncorrelation between the sum and difference of the two jet momenta is found to\nbe positive, and rising, as the dijet momentum increases. The model\nrepresenting the state-of-the-art calculations in electromagnetic interactions\nwith protons overestimates this angular correlation. The measurement is also\ncompared to a recent theoretical calculation that includes final state\ninteractions.", "Zeno and anti-Zeno polarization control of spin-ensembles by induced\n dephasing\n We experimentally and theoretically demonstrate the purity (polarization)\ncontrol of qubits entangled with multiple spins, using induced dephasing in\nnuclear magnetic resonance (NMR) setups to simulate repeated quantum\nmeasurements. We show that one may steer the qubit ensemble towards a\nquasi-equilibrium state of certain purity, by choosing suitable time intervals\nbetween dephasing operations. These results demonstrate that repeated dephasing\nat intervals associated with the anti-Zeno regime lead to ensemble\npurification, whereas those associated with the Zeno regime lead to ensemble\nmixing.", "Anisotropic Optical Response of Dense Quark Matter under Rotation:\n Compact Stars as Cosmic Polarizers\n Quantum vortices in the color-flavor locked (CFL) phase of QCD have bosonic\ndegrees of freedom, called the orientational zero modes, localized on them. We\nshow that the orientational zero modes are electromagnetically charged. As a\nresult, a vortex in the CFL phase nontrivially interacts with photons. We show\nthat a lattice of vortices acts as a polarizer of photons with wavelengths\nlarger than some critical length.", "Sivers asymmetry of Drell-Yan production in small-$x$ regime\n We study the Sivers single spin asymmetry of the Drell-Yan lepton pair\nproduction in the small-$x$ regime. We find that in the corresponding kinematic\nregion the spin asymmetry calculated in the small-$x$ approach is consistent\nwith either the usual transverse-momentum-dependent factorization formalism or\nthe collinear factorization formalism, respectively. We estimate the Sivers\nasymmetry for both polarized p+p and p+A collisions and argue that the\nDrell-Yan production is an interesting and unique probe for both the transverse\nspin physics and the small-$x$ saturation effect.", "Progress in development of silica aerogel for particle- and\n nuclear-physics experiments at J-PARC\n This study presents the advancement in hydrophobic silica aerogel development\nfor use as Cherenkov radiators and muonium production targets. These devices\nare scheduled for use in several particle- and nuclear-physics experiments that\nare planned in the near future at the Japan Proton Accelerator Research\nComplex. Our conventional method to produce aerogel tiles with an intermediate\nindex of refraction of approximately 1.05 is extended so that we can now\nproduce aerogel tiles with lower indices of refraction (i.e., 1.03-1.04) and\nhigher indices of refraction (i.e., 1.075-1.08); each with excellent\ntransparency. A new production method, called pin drying, was optimized to\nproduce larger area aerogels consistently with an ultrahigh index of refraction\n(>1.10). In addition, for use as a thermal-muonium-emitting material at room\ntemperature, dedicated low-density aerogels were fabricated using the\nconventional method.", "Electromagnetic Polarizabilities: Lattice QCD in Background Fields\n Chiral perturbation theory makes definitive predictions for the extrinsic\nbehavior of hadrons in external electric and magnetic fields. Near the chiral\nlimit, the electric and magnetic polarizabilities of pions, kaons, and nucleons\nare determined in terms of a few well-known parameters. In this limit, hadrons\nbecome quantum mechanically diffuse as polarizabilities scale with the inverse\nsquare-root of the quark mass. In some cases, however, such predictions from\nchiral perturbation theory have not compared well with experimental data.\nUltimately we must turn to first principles numerical simulations of QCD to\ndetermine properties of hadrons, and confront the predictions of chiral\nperturbation theory. To address the electromagnetic polarizabilities, we\nutilize the background field technique. Restricting our attention to\ncalculations in background electric fields, we demonstrate new techniques to\ndetermine electric polarizabilities and baryon magnetic moments for both\ncharged and neutral states. As we can study the quark mass dependence of\nobservables with lattice QCD, the lattice will provide a crucial test of our\nunderstanding of low-energy QCD, which will be timely in light of ongoing\nexperiments, such as at COMPASS and HI\\gamma S.", "Measurement of the centrality dependence of J/{\\psi} yields and\n observation of Z production in lead-lead collisions with the ATLAS detector\n at the LHC\n Using the ATLAS detector, a centrality-dependent suppression has been\nobserved in the yield of J/{\\psi} mesons produced in the collisions of lead\nions at the Large Hadron Collider. In a sample of minimum-bias lead-lead\ncollisions at a nucleon-nucleon centre of mass energy \\surd sNN = 2.76 TeV,\ncorresponding to an integrated luminosity of about 6.7 {\\mu}b^{-1}, J/{\\psi}\nmesons are reconstructed via their decays to {\\mu}+{\\mu}- pairs. The measured\nJ/{\\psi} yield, normalized to the number of binary nucleon-nucleon collisions,\nis found to significantly decrease from peripheral to central collisions. The\ncentrality dependence is found to be qualitatively similar to the trends\nobserved at previous, lower energy experiments. The same sample is used to\nreconstruct Z bosons in the {\\mu}+{\\mu}- final state, and a total of 38\ncandidates are selected in the mass window of 66 to 116 GeV. The relative Z\nyields as a function of centrality are also presented, although no conclusion\ncan be inferred about their scaling with the number of binary collisions,\nbecause of limited statistics. This analysis provides the first results on\nJ/{\\psi} and Z production in lead-lead collisions at the LHC.", "A high precision neutrino beam for a new generation of short baseline\n experiments\n The current generation of short baseline neutrino experiments is approaching\nintrinsic source limitations in the knowledge of flux, initial neutrino energy\nand flavor. A dedicated facility based on conventional accelerator techniques\nand existing infrastructures designed to overcome these impediments would have\na remarkable impact on the entire field of neutrino oscillation physics. It\nwould improve by about one order of magnitude the precision on $\\nu_\\mu$ and\n$\\nu_e$ cross sections, enable the study of electroweak nuclear physics at the\nGeV scale with unprecedented resolution and advance searches for physics beyond\nthe three-neutrino paradigm. In turn, these results would enhance the physics\nreach of the next generation long baseline experiments (DUNE and\nHyper-Kamiokande) on CP violation and their sensitivity to new physics. In this\ndocument, we present the physics case and technology challenge of high\nprecision neutrino beams based on the results achieved by the ENUBET\nCollaboration in 2016-2018. We also set the R&D milestones to enable the\nconstruction and running of this new generation of experiments well before the\nstart of the DUNE and Hyper-Kamiokande data taking. We discuss the\nimplementation of this new facility at three different level of complexity:\n$\\nu_\\mu$ narrow band beams, $\\nu_e$ monitored beams and tagged neutrino beams.\nWe also consider a site specific implementation based on the CERN-SPS proton\ndriver providing a fully controlled neutrino source to the ProtoDUNE detectors\nat CERN.", "Engineering atomic polarization with microwave-assisted optical pumping\n Polarized atomic ensembles play a crucial role in precision measurements. We\ndemonstrate a novel method of creating atomic polarization in an alkali vapor\nin a continuous-wave regime. The method relies on a combination of optical\npumping by a laser beam and microwave transitions due to a cavity-enhanced\nmagnetic field. With this approach, atomic internal angular momentum can be\noriented along a static magnetic field at an arbitrary angle with respect to\nthe laser beam. Furthermore, the atomic polarization depends on the microwave\nparameters, which can be used for microwave-to-optical transduction and\nmicrowave-controlled nonlinear magneto-optical rotation.", "Top Jets at the LHC\n We study the reconstruction of high p_T hadronically-decaying top quarks at\nthe LHC. The main challenge in identifying energetic top quarks is that the\ndecay products become increasingly collimated. This reduces the efficacy of\nconventional methods that exploit the topology of the top decay chain. We focus\non the cases where the decay products of the top quark are reconstructed as a\nsingle jet, a \"top-jet\". The most basic \"top-tag\" method based on jet mass\nmeasurement is considered in detail. To analyze the top-tagging method,\ntheoretical and experimental aspects of the QCD jet background are examined.\nBased on QCD factorization, we derive a simple analytic approximation for the\nshape of the QCD jet mass spectrum. We observe a good agreement with the Monte\nCarlo simulation. We consider high-p_T t\\bar{t} production in the Standard\nModel as an example, and show that our theoretical QCD jet mass distributions\ncan efficiently characterize the background via sideband analyses. We show that\nwith 25 fb^{-1} of data, our approach allows us to resolve top-jets with p_T\n$\\ge$ 1 TeV from the QCD background, and about 1.5 TeV top-jets with 100\nfb^{-1}, without relying on b-tagging. To further improve the significance we\nconsider jet shapes (analyzed in 0807.0234 [hep-ph]), which resolve the\nsubstructure of energy flow inside cone jets. A method of measuring top quark\npolarization by using the b-quark p_T is also presented. The main advantages of\nour approach are: (i) the mass distributions are driven by first principle\ncalculations, instead of relying solely on Monte Carlo simulation; (ii) for\nhigh p_T jets (p_T $\\ge$1 TeV), IR-safe jet shape variables are robust against\ndetector resolution effects. Our analysis is applicable to other boosted\nmassive particles such as the electroweak gauge bosons and the Higgs.", "Possible polarized neutron-nucleus scattering search for a new\n spin-dependent nucleon-nucleon coupling in a Fm range\n An experimental opportunity is presented for the future to measure possible\nP- and T-non-invariant axion-like interaction between nucleons in a Fm range.\nThis interaction may be searched for in the measurement spin-dependent\nasymmetry of scattering of polarized neutrons in a keV-MeV energy range by\nheavy nuclei.", "High Energy Neutrino Physics with Liquid Scintillation Detectors\n Large liquid scintillation detectors have been generally dedicated to low\nenergy neutrino measurements, in the MeV energy region (as for example, KamLAND\nand Borexino). Herein we describe the potential employment of large detectors\n(>1 kiloton) for studies of higher energy neutrinos interactions, from the\ncosmic rays and as a long baseline neutrino detector. Generally when people\nhave considered large new instruments such as Hanohano and LENA, they have\nabandoned the possibility of doing useful measurements with higher energy\nneutrino interactions since these produce enough light to illuminate every\nphotomultiplier tube, and the scintillation light is isotropic. Here we take\ninto account Fermat's principle, which tells us that indeed the first light to\nreach the PMTs will be on or near the lightcone, the \"Fermat surface\", and that\ndirectional track information is available. Moreover we have realized that\nparticle type distinction is possible (quasi-elastic muons from electrons). In\nfact the resolution from a detector of comparable size to SuperKamiokande, may\nbe better in both angle, energy and possibly particle type. This realization\nopens the doors to a number of applications. Moreover, this capability can be\ndemonstrated with the use of (future) KamLAND detected events in the new long\nbaseline neutrino beam from the Jaeri accelerator in Japan, due to start\noperations this year. Some of the most attractive possibilities for the future\nmay be in using Hanohano as a movable long baseline detector in this same beam,\nthe employment of LENA in Europe in future long baseline neutrino beams from\nCERN, and in the DUSEL underground laboratory at Homestake.", "Toward a Realistic Pulsar Magnetosphere\n We present the magnetic and electric field structures as well as the currents\nand charge densities of pulsar magnetospheres which do not obey the ideal\ncondition, ${\\bf E \\cdot B =0}$. Since the acceleration of particles and the\nproduction of radiation requires the presence of an electric field component\nparallel to the magnetic field, ${\\bf E}_\\parallel$, the structure of non-Ideal\npulsar magnetospheres is intimately related to the production of pulsar\nradiation. Therefore, knowledge of the structure of non-Ideal pulsar\nmagnetospheres is important because their comparison (including models for the\nproduction of radiation) with observations will delineate the physics and the\nparameters underlying the pulsar radiation problem. We implement a variety of\nprescriptions that support nonzero values for ${\\bf E}_\\parallel$ and explore\ntheir effects on the structure of the resulting magnetospheres. We produce\nfamilies of solutions that span the entire range between the vacuum and the\n(ideal) Force-Free Electrodynamic solutions. We also compute the amount of\ndissipation as a fraction of the Poynting flux for pulsars of different angles\nbetween the rotation and magnetic axes and conclude that this is at most 20-40%\n(depending on the non-ideal prescription) in the aligned rotator and 10% in the\nperpendicular one. We present also the limiting solutions with the property\n$J=\\rho c$ and discuss their possible implication on the determination of the\n\"on/off\" states of the intermittent pulsars. Finally, we find that solutions\nwith values of $J$ greater than those needed to null ${\\bf E}_\\parallel$\nlocally produce oscillations, potentially observable in the data.", "Gas Gain Measurements from a Negative Ion TPC X-ray Polarimeter\n Gas-based time projection chambers (TPCs) have been shown to be highly\nsensitive X-ray polarimeters having excellent quantum efficiency while at the\nsame time achieving large modulation factors. To observe polarization of the\nprompt X-ray emission of a Gamma-ray burst (GRB), a large area detector is\nneeded. Diffusion of the electron cloud in a standard TPC could be prohibitive\nto measuring good modulation when the drift distance is large. Therefore, we\npropose using a negative ion TPC (NITPC) with Nitromethane (CH3NO2) as the\nelectron capture agent. The diffusion of negative ions is reduced over that of\nelectrons due to the thermal coupling of the negative ions to the surrounding\ngas. This allows for larger area detectors as the drift distance can be\nincreased without degrading polarimeter modulation. Negative ions also travel\n~200 times slower than electrons, allowing the readout electronics to operate\nslower, resulting in a reduction of instrument power. To optimize the NITPC\ndesign, we have measured gas gain with SciEnergy gas electron multipliers\n(GEMs) in single and double GEM configurations. Each setup was tested with\ndifferent gas combinations, concentrations and pressures: P10 700 Torr, Ne+CO2\n700 Torr at varying concentrations of CO2 and Ne+CO2+CH3NO2 700 Torr. We report\ngain as a function of total voltage, measured from top to bottom of the GEM\nstack, and as a function of drift field strength for the gas concentrations\nlisted above. Examples of photoelectron tracks at 5.9 keV are also presented.", "An extended $R^{(2)}_{\\Psi_m}(\\Delta S_2)$ correlator for detecting and\n characterizing the Chiral Magnetic Wave\n The extended $R^{(2)}_{\\Psi_{m}}(\\Delta S_{2})$ correlator is presented and\nexamined for its efficacy to detect and characterize the quadrupole charge\nseparation ($\\Delta S_{2}$) associated with the purported Chiral Magnetic Wave\n(CMW) produced in heavy-ion collisions. Sensitivity tests involving varying\ndegrees of proxy CMW signals injected into events simulated with the\nMulti-Phase Transport Model (AMPT), show that the $R^{(2)}_{\\Psi_{m}}(\\Delta\nS_{2})$ correlator provides discernible responses for the background- and\nCMW-driven charge separation. This distinction could aid identification of the\nCMW via measurements of the $R^{(2)}_{\\Psi_{2}}(\\Delta S_{2})$ and\n$R^{(2)}_{\\Psi_{3}}(\\Delta S_{2})$ correlators, relative to the second-\n($\\Psi_2$) and third-order ($\\Psi_3$) event planes. The tests also indicate a\nlevel of sensitivity that would allow for robust experimental characterization\nof the CMW signal.", "Electromagnetic Energy, Momentum, and Angular Momentum in an\n Inhomogeneous Linear Dielectric\n In a previous work, Optics Communications 284 (2011) 2460--2465, we\nconsidered a dielectric medium with an anti-reflection coating and a spatially\nuniform index of refraction illuminated at normal incidence by a\nquasimonochromatic field. Using the continuity equations for the\nelectromagnetic energy density and the Gordon momentum density, we constructed\na traceless, symmetric energy--momentum tensor for the closed system. In this\nwork, we relax the condition of a uniform index of refraction and consider a\ndielectric medium with a spatially varying index of refraction that is\nindependent of time, which essentially represents a mechanically rigid\ndielectric medium due to external constraints. Using continuity equations for\nenergy density and for Gordon momentum density, we construct a symmetric\nenergy--momentum matrix, whose four-divergence is equal to a generalized\nHelmholtz force density four-vector. Assuming that the energy-momentum matrix\nhas tensor transformation properties under a symmetry group of space-time\ncoordinate transformations, we derive the global conservation laws for the\ntotal energy, momentum, and angular momentum.", "A comprehensive analysis of differential cross sections and analyzing\n powers in the proton-deuteron break-up channel at 135 MeV\n A selection of measured cross sections and vector analyzing powers, Ax and\nAy, are presented for the pd break-up reaction. The data are taken with a\npolarized proton beam energy of 135 MeV using the Big Instrument for\nNuclear-polarization Analysis (BINA) at KVI, the Netherlands. With this setup,\nAx is extracted for the first time for a large range of energies as well as\npolar and azimuthal angles of the two outgoing protons. For most of the\nconfigurations, the results at small and large relative azimuthal angles differ\nin behavior when comparing experimental data with the theoretical calculations.\nWe also performed a more global comparison of our data with theoretical\ncalculations using a chi-square ($\\chi^2$) analysis. The cross-section results\nshow huge values of $\\chi^2$/d.o.f.. The absolute values of $\\chi^2$/d.o.f. for\nthe components of vector analyzing powers, Ax and Ay, are smaller than the ones\nfor the cross section, partly due to larger uncertainties for these\nobservables. However, also for these observables no satisfactory agreement is\nfound for all angular combinations. This implies that the present models of a\nthree-nucleon force are not able to provide a satisfactory description of\nexperimental data.", "The analysis of Drell-Yan lepton pair production in the P-P(\\={P})\n colliders using different angular ordering constraints and\n $k_t$-factorization approach\n In this work, the P-P(\\={P}) Drell-Yan lepton pair production (DY)\ndifferential cross sections at hadrons colliders, such as LHC and TEVATRON, are\nstudied in the ${k_{t}}$-factorization framework. In order to take into account\nthe transverse momenta of incoming partons, we use the unintegrated parton\ndistribution functions (UPDF) of Kimber et al (KMR) and Martin et al (MRW) in\nthe leading order (LO) and next-to-leading-order (NLO) levels with the input\nMMHT2014 PDF libraries. Based on the different off-shell partonic matrix\nelements, we analyze the behaviors of DY differential cross sections with\nrespect to the invariant mass, the transverse momentum and the rapidity as well\nas the specific angular correlation between the produced leptons. The numerical\nresults are compared with the experimental data, in different energies, which\nare reported by various collaborations, such as CDF, CMS, ATLAS and LHCb. It is\nshown that the NLO-MRW and KMR schemes predict closer results to the data\ncompared to the LO-MRW, since we do not have fragmentation.", "Relativistic magnetohydrodynamics with spin\n We extend the classical phase-space distribution function to include the spin\nand electromagnetic fields coupling and derive the modified constitutive\nrelations for charge current, energy-momentum tensor, and spin tensor. Because\nof the coupling, the new tensors receive corrections to their perfect-fluid\ncounterparts and make the background and spin fluid equations of motion\ncommunicate with each other. We investigate special cases which are relevant in\nhigh-energy heavy-ion collisions, including baryon free matter and large mass\nlimit. Using Bjorken symmetries, we find that spin polarization increases with\nincreasing magnetic field for an initially positive baryon chemical potential.\nThe corrections derived in this framework may help to explain the splitting\nobserved in Lambda hyperons spin polarization measurements.", "Self-focusing magnetostatic beams in thin magnetic films\n The possibility of generation of stable self-focusing beams in in-plane\nmagnetized thin magnetic films is considered and theoretical conditions for the\nexistence of such localized solutions are discussed. It is shown that for the\ndefinite direction between static magnetizing field and preferential direction\nof radiation from microwave antenna the problem reduces to the one-dimensional\nnonlinear Schroedinger equation. For such angles it is possible to generate\nstable self-focusing beams. Particular values of beam width and propagation\nangles versus magnitude of magnetizing field are calculated in order to suggest\nthe realistic experimental setup for the observation of discovered effect.", "Phi meson production in In-In collisions at $E_{\\rm lab}$=158$A$ GeV:\n evidence for relics of a thermal phase\n Yields and transverse mass distributions of the $\\phi$-mesons reconstructed\nin the $\\phi\\to\\mu^+\\mu^-$ channel in In+In collisions at $E_{\\rm lab}$=158$A$\nGeV are calculated within an integrated Boltzmann+hydrodynamics hybrid approach\nbased on the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) transport\nmodel with an intermediate hydrodynamic stage. The analysis is performed for\nvarious centralities and a comparison with the corresponding NA60 data in the\nmuon channel is presented. We find that the hybrid model, that embeds an\nintermediate locally equilibrated phase subsequently mapped into the transport\ndynamics according to thermal phase-space distributions, gives a good\ndescription of the experimental data, both in yield and slope. On the contrary,\nthe pure transport model calculations tend to fail in catching the general\nproperties of the $\\phi$ meson production: not only the yield, but also the\nslope of the $m_T$ spectra, very poorly compare with the experimental\nobservations.", "Hadronic vacuum polarization: $(g-2)_\\mu$ versus global electroweak fits\n Hadronic vacuum polarization (HVP) is not only a critical part of the\nStandard Model (SM) prediction for the anomalous magnetic moment of the muon\n$(g-2)_\\mu$, but also a crucial ingredient for global fits to electroweak (EW)\nprecision observables due to its contribution to the running of the\nfine-structure constant encoded in $\\Delta\\alpha^{(5)}_\\text{had}$. We find\nthat with modern EW precision data, including the measurement of the Higgs\nmass, the global fit alone provides a competitive, independent determination of\n$\\Delta \\alpha^{(5)}_\\text{had}\\big|_\\text{EW}=270.2(3.0)\\times 10^{-4}$. This\nvalue actually lies below the range derived from $e^+e^-\\to\\text{hadrons}$\ncross-section data, and thus goes into the opposite direction as would be\nrequired if a change in HVP were to bring the SM prediction for $(g-2)_\\mu$\ninto agreement with the Brookhaven measurement. Depending on the energy where\nthe bulk of the changes in the cross section occurs, reconciling experiment and\nSM prediction for $(g-2)_\\mu$ by adjusting HVP would thus not necessarily\nweaken the case for physics beyond the SM (BSM), but to some extent shift it\nfrom $(g-2)_\\mu$ to the EW fit. We briefly explore some options of BSM\nscenarios that could conceivably explain the ensuing tension.", "Highly efficient crystal deflector for channeling extraction of a proton\n beam from accelerators\n The design and performance of a novel crystal deflector for proton beams are\nreported. A silicon crystal was used to channel and extract 70 GeV protons from\nthe U-70 accelerator in Protvino with an efficiency of 85%, as measured for a\nbeam of ~1e12 protons directed towards crystals of ~2 mm length in spills of ~2\ns duration. Experimental data agree with the theoretically predicted Monte\nCarlo results for channeling. The technique allows one to manufacture a very\nshort deflector along the beam direction (2 mm). Consequently, multiple\nencounters of circulating particles with the crystal are possible with little\nprobability of multiple scattering and nuclear interactions per encounter.\nThus, drastic increase in efficiency for particle extraction out of the\naccelerator was attained. We show the characteristics of the crystal- deflector\nand the technology behind it. Such an achievement is important in devising a\nmore efficient use of the U-70 accelerator and provides crucial support for\nimplementing crystal-assisted slow extraction and collimation in other\nmachines, such as the Tevatron, RHIC, the AGS, the SNS, COSY, and the LHC.", "An Introduction to Nonassociative Physics\n We give a pedagogical introduction to the nonassociative structures arising\nfrom recent developments in quantum mechanics with magnetic monopoles, in\nstring theory and M-theory with non-geometric fluxes, and in M-theory with\nnon-geometric Kaluza-Klein monopoles. After a brief overview of the main\nhistorical appearences of nonassociativity in quantum mechanics, string theory\nand M-theory, we provide a detailed account of the classical and quantum\ndynamics of electric charges in the backgrounds of various distributions of\nmagnetic charge. We apply Born reciprocity to map this system to the phase\nspace of closed strings propagating in R-flux backgrounds of string theory, and\nthen describe the lift to the phase space of M2-branes in R-flux backgrounds of\nM-theory. Applying Born reciprocity maps this M-theory configuration to the\nphase space of M-waves probing a non-geometric Kaluza-Klein monopole\nbackground. These four perspective systems are unified by a covariant 3-algebra\nstructure on the M-theory phase space.", "Nuclear modification of vector boson production in proton-lead\n collisions at the LHC\n In anticipating the upcoming proton-lead run at the LHC in the near future,\nwe present predictions for the nuclear modification factor of transverse\nmomentum spectrum of $Z^0$ production and transverse momentum broadening of\nvector boson ($J/\\psi$, $\\Upsilon$, $W/Z^0$) production in proton-lead\ncollisions at $\\sqrt{s}=5$ TeV, respectively. We find that the measurement of\nnuclear modification factor of $Z^0$ production provides a clean and\nunambiguous test of the nuclear anti-shadowing proposed in the recent EPS09. In\naddition, the dramatic difference in transverse momentum broadening between the\nheavy quarkonium and $W/Z^0$ production could be a signature prediction of QCD\nparton multiple scattering, and it provides valuable informations on color\nneutralization of a produced heavy quark pair when it transmutes into a\nphysical quarkonium.", "Design of the Magnet System of the Neutron Decay Facility PERC\n The PERC (Proton and Electron Radiation Channel) facility is currently under\nconstruction at the research reactor FRM II, Garching. It will serve as an\nintense and clean source of electrons and protons from neutron beta decay for\nprecision studies. It aims to contribute to the determination of the\nCabibbo-Kobayashi-Maskawa quark-mixing element $V_{ud}$ from neutron decay data\nand to search for new physics via new effective couplings. PERC's central\ncomponent is a 12m long superconducting magnet system. It hosts an 8m long\ndecay region in a uniform field. An additional high-field region selects the\nphase space of electrons and protons which can reach the detectors and largely\nimproves systematic uncertainties. We discuss the design of the magnet system\nand the resulting properties of the magnetic field.", "Design approach for modern high-current, radio-frequency quadrupole\n accelerators with low emittance transfer\n Radio Frequency Quadrupole (RFQ) accelerators often need to face the\nchallenges of space charge effects from high beam currents. This study\ninvestigated how to reach RFQ beam dynamics designs with not only high beam\ntransmission and short structure length but also high beam quality\nsimultaneously. To avoid beam instabilities induced by emittance transfer, a\nso-called el/et (ratio of the longitudinal and transverse emittances) = 1.0\ndesign guideline is being proposed. The application of this design guideline\nintegrated with the BABBLE/NFSP design method for a high current, high\nfrequency, high injection energy RFQ accelerator is described.", "Next-to-leading order QCD predictions for dijet photoproduction in\n lepton-nucleus scattering at the future EIC and at possible LHeC, HE-LHeC,\n and FCC facilities\n We calculate cross sections for inclusive dijet photoproduction in\nelectron-nucleus scattering in the kinematics of the future EIC and the\npossible LHeC, HE-LHeC, and the FCC using next-to-leading order (NLO)\nperturbative QCD and nCTEQ15 and EPPS16 nuclear parton density functions\n(nPDFs). We make predictions for distributions in the dijet average transverse\nmomentum ${\\bar p}_T$, the average rapidity $\\bar{\\eta}$, the observed nuclear\nmomentum fraction $x_A^{\\rm obs}$, and the observed photon momentum fraction\n$x_{\\gamma}^{\\rm obs}$. Comparing the kinematic reaches of the four colliders,\nwe find that an increase of the collision energy from the EIC to the LHeC and\nbeyond extends the coverage in all four considered variables. Notably, the LHeC\nand HE-LHeC will allow one to probe the dijet cross section down to $x_A^{\\rm\nobs} \\sim 10^{-4}$ (down to $x_A^{\\rm obs} \\sim 10^{-5}$ at the FCC). The ratio\nof the dijet cross sections on a nucleus and the proton,\n$\\sigma_A/(A\\sigma_p)$, depends on $x_A^{\\rm obs}$ in a similar way as the\nratio of gluon densities, $g_A(x_A,\\mu^2)/[A g_p(x_A,\\mu^2)]$, for which\ncurrent nPDFs predict a strong suppression due to nuclear shadowing in the\nregion $x_A^{\\rm obs} < 0.01$. Dijet photoproduction at future lepton-nucleus\ncolliders can therefore be used to test this prediction and considerably reduce\nthe current uncertainties of nPDFs.", "Constraining off-shell effects using low-energy Compton scattering\n Off-shell effects in proton electromagnetic vertices can be constrained from\ntheir effects on known processes. In particular, parameters in models for the\noff-shell effects can be determined by fitting to the proton electric and\nmagnetic polarizabilities measured in low-energy Compton scattering. There has\nbeen recent speculation that off-shell effects contribute enough energy to the\nmuonic hydrogen Lamb shift to explain the discrepancy between muonic and\nelectronic measurements of the proton radius. We find that the constraints\ndiscussed here make the off-shell effects about two orders of magnitude smaller\nthan needed for this purpose.", "Design and experimental investigation of a planar metamaterial Silicon\n based lenslet\n The next generations of ground-based cosmic microwave background experiments\nwill require polarisation sensitive, multichroic pixels of large focal planes\ncomprising several thousand detectors operating at the photon noise limit. One\napproach to achieve this goal is to couple light from the telescope to a\npolarisation sensitive antenna structure connected to a superconducting\ndiplexer network where the desired frequency bands are filtered before being\nfed to individual ultra-sensitive detectors such as Transition Edge Sensors.\nTraditionally, arrays constituted of horn antennas, planar phased antennas or\nanti-reflection coated micro-lenses have been placed in front of planar antenna\nstructures to achieve the gain required to couple efficiently to the telescope\noptics. In this paper are presented the design concept and a preliminary\nanalysis of the measured performances of a phase-engineered metamaterial\nflat-lenslet. The flat lens design is inherently matched to free space,\navoiding the necessity of an anti-reflection coating layer. It can be\nfabricated lithographically, making scaling to large format arrays relatively\nsimple. Furthermore, this technology is compatible with the fabrication process\nrequired for the production of large-format lumped element kinetic inductance\ndetector arrays which have already demonstrated the required sensitivity along\nwith multiplexing ratios of order 1000 detectors/channel.", "Artificial Wormhole\n It is shown that recently reported result by the OPERA Collaboration\n(arXive:1109.4897) of an early arrival time of muon neutrinos with respect to\nthe speed of light in vacuum does not violate standard physical laws. We show\nthat vacuum polarization effects in intensive external fields may form a\nwormhole-like object. The simplest theory of such an effect is presented and\nbasic principles of formation of an artificial wormhole are also considered.", "Model for the overall phase-space acceptance in a Zeeman decelerator\n We present a new formalism to calculate phase-space acceptance in a Zeeman\ndecelerator. Using parameters closely mimicking previous Zeeman deceleration\nexperiments, this approach reveals a hitherto unconsidered velocity dependence\nof the phase stability which we ascribe to the finite rise and fall times of\nthe current pulses that generate the magnetic fields inside the deceleration\ncoils. It is shown that changing the current switch-off times as the sequence\nprogresses, so as to maintain a constant mean acceleration per pulse, can lead\nto a constant phase stability and hence a beam with well-defined\ncharacteristics. We also find that the time overlap between fields of adjacent\ncoils has an influence on the phase-space acceptance. Previous theoretical and\nexperimental results suggested unfilled regions in phase space that influence\nparticle transmission through the decelerator. Our model provides, for the\nfirst time, a means to directly identify the origin of these effects due to\ncoupling between longitudinal and transverse dynamics. Since optimum phase\nstability is restricted to a rather small parameter range in terms of the\nreduced position of the synchronous particle, only a limited range of final\nvelocities can be attained using a given number of coils. We evaluate phase\nstability for different Zeeman deceleration sequences, and, by comparison with\nnumerical three-dimensional particle trajectory simulations, we demonstrate\nthat our model provides a valuable tool to find optimum parameter sets for\nimproved Zeeman deceleration schemes. An acceleration-deceleration scheme is\nshown to be a useful approach to generating beams with well-defined properties\nfor variable-energy collision experiments. More generally, the model provides\nsignificant physical insights applicable to other types of particle\ndecelerators with finite rise and fall time fields.", "Space-time Symmetry Transformations of Elementary Particles realized in\n Optics Laboratories\n The second-order differential equation describes harmonic oscillators, as\nwell as currents in LCR circuits. This allows us to study oscillator systems by\nconstructing electronic circuits. Likewise, one set of closed commutation\nrelations can generate group representations applicable to different branches\nof physics. It is pointed out that polarization optics can be formulated in\nterms of the six-parameter Lorentz group. This allows us to construct optical\ninstruments corresponding to the subgroups of the Lorentz groups. It is shown\npossible to produce combinations of optical filters that exhibit\ntransformations corresponding to Wigner rotations and Iwasawa decompositions,\nwhich are manifestations of the internal space-time symmetries of massive and\nmassless particles.", "The Muon g-2 Experiment Overview and Status as of June 2016\n The Muon g-2 Experiment at Fermilab will measure the anomalous magnetic\nmoment of the muon to a precision of 140 parts per billion, which is a factor\nof four improvement over the previous E821 measurement at Brookhaven. The\nexperiment will also extend the search for the electric dipole moment (EDM) of\nthe muon by approximately two orders of magnitude, with a sensitivity down to\n$10^{-21}$ e.cm. Both of these measurements are made by combining a precise\nmeasurement of the 1.45T storage ring magnetic field with an analysis of the\nmodulation of the decay rate of higher-energy positrons (from anti-muons),\nrecorded by 24 calorimeters and 3 straw tracking detectors. The recent progress\nin the alignment of the electrostatic quadrapole plates and the trolley rails\ninside the vacuum chambers, and in establishing the uniform storage ring\nmagnetic field will be described.", "Polarized structure functions of the deuteron\n Physics of spin-1 hadron is an unexplored topic in the high-energy region\nalthough spin-1/2 physics has been well investigated in the last decade. It is\nimportant to test our knowledge of hadron spin structure in a quite different\nfield of spin physics. We discuss tensor structure functions, which do not\nexist for the spin-1/2 nucleon, in lepton scattering and in hadron reactions\nsuch as the polarized proton-deuteron Drell-Yan process.", "Energy-momentum tensor of the nucleon on the light front: Abel\n tomography case\n We investigate the two-dimensional energy-momentum-tensor (EMT) distributions\nof the nucleon on the light front, using the Abel transforms of the\nthree-dimensional EMT ones. We explicitly show that the main features of all\nEMT distributions are kept intact in the course of the Abel transform. We also\nexamine the equivalence between the global and local conditions for the nucleon\nstability in the three-dimensional Breit frame and in the two-dimensional\ntransverse plane on the light front. We also discuss the two-dimensional force\nfields inside a nucleon on the light front.", "Linearized Optimal Transport for Collider Events\n We introduce an efficient framework for computing the distance between\ncollider events using the tools of Linearized Optimal Transport (LOT). This\npreserves many of the advantages of the recently-introduced Energy Mover's\nDistance, which quantifies the \"work\" required to rearrange one event into\nanother, while significantly reducing the computational cost. It also furnishes\na Euclidean embedding amenable to simple machine learning algorithms and\nvisualization techniques, which we demonstrate in a variety of jet tagging\nexamples. The LOT approximation lowers the threshold for diverse applications\nof the theory of optimal transport to collider physics.", "Anisotropic light-shift and magic-polarization of the intercombination\n line of Dysprosium atoms in a far-detuned dipole trap\n We characterize the anisotropic differential ac-Stark shift for the Dy $626$\nnm intercombination transition, induced in a far-detuned $1070$ nm optical\ndipole trap, and observe the existence of a \"magic polarization\" for which the\npolarizabilities of the ground and excited states are equal. From our\nmeasurements we extract both the scalar and tensorial components of the dynamic\ndipole polarizability for the excited state, $\\alpha_E^\\text{s} = 188\n(12)\\,\\alpha_\\text{0}$ and $\\alpha_E^\\text{t} = 34 (12)\\,\\alpha_\\text{0}$,\nrespectively, where $\\alpha_\\text{0}$ is the atomic unit for the electric\npolarizability. We also provide a theoretical model allowing us to predict the\nexcited state polarizability and find qualitative agreement with our\nobservations. Furthermore, we utilize our findings to optimize the efficiency\nof Doppler cooling of a trapped gas, by controlling the sign and magnitude of\nthe inhomogeneous broadening of the optical transition. The resulting initial\ngain of the collisional rate allows us, after forced evaporation cooling, to\nproduce a quasi-pure Bose-Einstein condensate of $^{162}$Dy with $3\\times 10^4$\natoms.", "Coherence and information in a fiber interferometer\n We present an experiment based on a fibered Mach-Zehnder interferometer. The\naim is to familiarize students with fibered optics and interferometry, and to\nimprove their understanding of optical amplification. The laboratory project\nhas two parts: in a first part, the students modulate the optical path of the\ninterferometer to study the spectra of light sources via Fourier Transform\nSpectroscopy. In a second part, an optical amplifier is placed in one or both\narms of the interferometer. The set-up uses monomode, polarization-maintaining\nfibers that propagate light of 1.5 $\\mu$m wavelength. In this article, we\ndescribe the set-up and the analysis of the measurements, and we present\nresults from student reports. All components are part of standard optical\ncatalogues. Even though the experiment is based on fibered optics, it is robust\nto manipulation (it is however relatively expensive $\\sim \\pounds 15\\,000$): We\ndescribe our efforts to protect the components from damage.\n This experiment is now offered as a 2-week project for third-year Physics\nstudents. The experiment may likewise be of value in early graduate level\nlaboratory courses.", "Multiple Volume Reflection from Different Planes Inside One Bent Crystal\n It is shown that multiple volume reflections from different planes of one\nbent crystal becomes possible when particles move at a small angle with respect\nto a crystal axis. Such a Multiple Volume Reflection makes it possible to\nincrease the particle deflection angle inside one crystal by more than four\ntimes and can be used to increase the efficiency of beam extraction and\ncollimation at the LHC and many other accelerators.", "Low emittance lattice design from first principles: reverse bending and\n longitudinal gradient bends\n The well-known relaxed theoretical minimum emittance (TME) cell is commonly\nused in the design of multi-bend achromat (MBA) lattices for the new generation\nof diffraction limited storage rings. But significantly lower emittance at\nmoderate focusing properties can be achieved by combining longitudinal gradient\nbends (LGB) and reverse bends (RB) in a periodic lattice unit cell. LGBs alone,\nhowever, are of rather limited gain.\n We investigate the emittance achievable for different unit cell classes as a\nfunction of the cell phase advance in a most general framework, i.e. with a\nminimum of assumptions on the particular cell optics. Each case is illustrated\nwith a practical example of a realistic lattice cell, eventually leading to the\nLGB/RB unit cell of the baseline lattice for the upgrade of the Swiss Light\nSource." ]

["Order $\\hbar$ Corrections to the Classical Dynamics of a Particle with\n Intrinsic Spin Moving i(...TRUNCATED)

["A method to generate first integrals from infinitesimal symmetries\n We propose a method to const(...TRUNCATED)

["Parametric ordering of complex systems\n Cellular automata (CA) dynamics are ordered in terms of (...TRUNCATED)

["Adaptive Model Predictive Control for High-Accuracy Trajectory Tracking\n in Changing Conditions\(...TRUNCATED)

["Scaling behaviour in daily air humidity fluctuations\n We show that the daily average air humidit(...TRUNCATED)

["Synaptic plasticity and neuronal refractory time cause scaling behaviour\n of neuronal avalanches(...TRUNCATED)

["Analysis of a dissipative model of self-organized criticality with\n random neighbors\n We analy(...TRUNCATED)

["The fate of $O(N)$ multi-critical universal behaviour\n The multi-critical fixed points of $O(N)$(...TRUNCATED)

["Individual Adaption in a Path-Based Simulation of the Freeway Network of\n Northrhine-Westfalia\n(...TRUNCATED)

["A self-organizing multi-agent system for distributed voltage regulation\n This paper presents a d(...TRUNCATED)

["Reproductive Tradeoffs In Uncertain Environments: Explaining The\n Evolution Of Cultural Elaborat(...TRUNCATED)

["Phase transitions in optimal strategies for betting\n Kelly's criterion is a betting strategy tha(...TRUNCATED)

["Democracy versus Dictatorship in Self-Organized Models of Financial\n Markets\n Models to mimic (...TRUNCATED)

["Insights into performance evaluation of com-pound-protein interaction\n prediction methods\n Mot(...TRUNCATED)

["Revisiting the Edge of Chaos: Evolving Cellular Automata to Perform\n Computations\n We present (...TRUNCATED)

["Logspace and compressed-word computations in nilpotent groups\n For finitely generated nilpotent (...TRUNCATED)

["Evolution of Cooperation, Differentiation, Complexity, and Diversity in\n an Iterated Three-perso(...TRUNCATED)

["Chaos-Assisted Long-Range Tunneling for Quantum Simulation\n We present an extension of the chaos(...TRUNCATED)