Importance of isobar density distributions on the chiral magnetic effect search

Abstract

Under the approximate chiral symmetry restoration, quark interactions with topological gluon fields in quantum chromodynamics can induce chirality imbalance and parity violation in local domains. An electric charge separation ({\sc cs}) could be generated along the direction of a strong magnetic field ({\bf B}), a phenomenon called the chiral magnetic effect ({\sc cme}). {\sc cs} measurements by azimuthal correlators are contaminated by a major background from elliptic flow anisotropy ($v_2$). Isobaric ${}_{44}^{96}$Ru+${}_{44}^{96}$Ru and ${}_{40}^{96}$Zr+${}_{40}^{96}$Zr collisions have been proposed to identify the {\sc cme} (expected to differ between the two systems) out of the background (expected to be almost the same). We show, by using the density-functional calculated proton and neutron distributions, that these expectations may not hold as originally anticipated, because the two systems may have sizable differences in eccentricity and $v_2$ and because their difference in {\bf B} may suffer from large uncertainties.

arXiv comment6 pages, 4 figures. v2: Now the magnetic field averaged over the overlap area is presented, instead of that at the single point at the overlap center in the previous version. v3: published version

References in corpus (59)

• Nuclear Ground-State Masses and Deformations
• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• Experimental discovery of Weyl semimetal TaAs
• Glauber Modeling in High Energy Nuclear Collisions
• Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
• Nuclear ground-state masses and deformations: FRDM(2012)
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Methods for analyzing anisotropic flow in relativistic nuclear collisions
• Observation of the chiral magnetic effect in ZrTe5
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Event-by-event generation of electromagnetic fields in heavy-ion collisions
• Chiral Magnetic and Vortical Effects in High-Energy Nuclear Collisions --- A Status Report
• Parity violation in hot QCD: why it can happen, and how to look for it
• Tables of E2 Transition Probabilities from the first $2^{+}$ States in Even-Even Nuclei
• Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation
• Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions
• ZPC 1.0.1: a parton cascade for ultrarelativistic heavy ion collisions
• First Results from Pb+Pb collisions at the LHC
• Possibility of spontaneous parity violation in hot QCD
• Unexpectedly large charge radii of neutron-rich calcium isotopes
• Charge, neutron, and weak size of the atomic nucleus
• Parity violation in hot QCD: how to detect it
• Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy ion collisions
• System Size, Energy, Pseudorapidity, and Centrality Dependence of Elliptic Flow
• Partonic effects on the elliptic flow at relativistic heavy ion collisions
• Charge separation relative to the reaction plane in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Beam-energy dependence of charge separation along the magnetic field in Au+Au collisions at RHIC
• Azimuthally fluctuating magnetic field and its impacts on observables in heavy-ion collisions
• Charge conservation in RHIC and contributiuons to local parity violation observables
• Effects of Cluster Particle Correlations on Local Parity Violation Observables
• Observation of charge-dependent azimuthal correlations in pPb collisions and its implication for the search for the chiral magnetic effect
• Testing the Chiral Magnetic Effect with Central U+U collisions
• Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models
• Anisotropic parton escape is the dominant source of azimuthal anisotropy in transport models
• Remarks on possible local parity violation in heavy ion collisions
• Constraints on the chiral magnetic effect using charge-dependent azimuthal correlations in pPb and PbPb collisions at the LHC
• Evolution of transverse flow and effective temperatures in the parton phase from a multi-phase transport model
• Test the chiral magnetic effect with isobaric collisions
• Measurement of Charge Multiplicity Asymmetry Correlations in High Energy Nucleus-Nucleus Collisions at 200 GeV
• Constraining the magnitude of the Chiral Magnetic Effect with Event Shape Engineering in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76$ TeV
• Predictions for $\sqrt{s_{NN}}=5.02$ TeV Pb+Pb Collisions from a Multi-Phase Transport Model
• Effects of final state interactions on charge separation in relativistic heavy ion collisions
• Electric Fields and Chiral Magnetic Effect in Cu + Au Collisions
• A new method for the experimental study of topological effects in the quark-gluon plasma
• Correlations of flow harmonics in 2.76A TeV Pb--Pb collisions
• Challenges in flow background removal in search for the chiral magnetic effect
• Wounded nucleon model with realistic nucleon-nucleon collision profile and observables in relativistic heavy-ion collisions
• Origin of the mass splitting of azimuthal anisotropies in a multi-phase transport model
• Nuclear Zemach Moments and Finite-Size Corrections to Allowed Beta Decay
• Suppression of elliptic-flow-induced correlations in an observable of possible local parity violation
• Origin of the mass splitting of elliptic anisotropy in a multiphase transport model
• Shape co-existence and parity doublet in Zr isotopes
• Elliptic flow of thermal dileptons in event-by-event hydrodynamic simulation
• Propagation of uncertainties in the nuclear DFT models

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• Chiral magnetic effect reveals the topology of gauge fields in heavy-ion collisions
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• Determine the neutron skin type by relativistic isobaric collisions
• Foundations and Applications of Quantum Kinetic Theory
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• Impact of magnetic-field fluctuations on measurements of the chiral magnetic effect in collisions of isobaric nuclei
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• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
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• Anomalous magnetohydrodynamics with temperature-dependent electric conductivity and application to the global polarization
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• Collective Excitation in High-Energy Nuclear Collisions -- In Memory of Professor Lianshou Liu
• Hydrodynamic simulations of directed flow for light hadrons in Au+Au and isobar collisions $\sqrt{s_{\text{NN}}}=$ 200 GeV
• Experimental review on the chiral magnetic effect in relativistic heavy ion collisions
• Electromagnetic Field Produced in High Energy Small Collision System within Charge Density Models of Nucleon
• Interactions between heavy quarks and tilted QGP fireballs in 200 AGeV Au+Au collisions
• Probing neutron skin and symmetry energy with relativistic isobar collisions
• An overview of new measurements of flow, chirality, and vorticity from STAR experiment
• Investigation of Experimental Observables in Search of the Chiral Magnetic Effect in Heavy-ion Collisions in the STAR experiment
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• Back-to-back relative-excess observable in search for the chiral magnetic effect
• Effects of Initial Density Fluctuations on Cumulants in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 GeV
• Impact of the pre-equilibrium phase for the determination of nuclear geometry in high-energy isobar collisions
• A new method to clarify contribution of chiral magnetic effect in small collision system $p^{\uparrow }+A$ involving a transversely polarized proton
• Influence of the residual magnetic field on the azimuthal distribution of final-state particles in photon-nuclear processes