Difference between signal and background of the chiral magnetic effect relative to spectator and participant planes in isobar collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=200$ GeV

Abstract

The search for the chiral magnetic effect (CME) in relativistic heavy-ion collisions helps us understand the $\mathcal{C}\mathcal{P}$ symmetry breaking in strong interactions and the topological nature of the QCD vacuum. Since the background and signal of the CME have different correlations with the spectator and participant planes, a two-plane method has been proposed to extract the fraction of the CME signal inside the CME observable of $\Delta \gamma$ from the experimental measurements relative to the two planes. Using a multiphase transport model with different strengths of the CME, we reexamine the two-plane method in isobar collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=200$ GeV. The ratios of the CME signals and the elliptic flow backgrounds relative to the two different planes are found to be different, which is inconsistent with the assumptions made in the current experimental measurements. This difference arises from the decorrelation effect of the chiral magnetic effect relative to the spectator and participant planes caused by final state interactions. Our finding suggests that the current experimental measurements may overestimate the fraction of the CME signal in the CME observable in the final state of relativistic heavy-ion collisions.

arXiv comment9 pages, 10 figures, final published version

References in corpus (67)

• The Chiral Magnetic Effect
• The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation"
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Estimate of the magnetic field strength in heavy-ion collisions
• Event-by-event generation of electromagnetic fields in heavy-ion collisions
• Flow at the SPS and RHIC as a Quark Gluon Plasma Signature
• Parity violation in hot QCD: why it can happen, and how to look for it
• Azimuthal Charged-Particle Correlations and Possible Local Strong Parity Violation
• Anisotropic transverse flow and the quark-hadron phase transition
• Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions
• 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
• Electromagnetic fields and anomalous transports in heavy-ion collisions --- A pedagogical review
• 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
• Novel quantum phenomena induced by strong magnetic fields in heavy-ion collisions
• Effects of Cluster Particle Correlations on Local Parity Violation Observables
• Testing the Chiral Magnetic Effect with Central U+U collisions
• Anomalous Chiral Transport in Heavy Ion Collisions from Anomalous-Viscous Fluid Dynamics
• Azimuthal correlations from transverse momentum conservation and possible local parity violation
• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Evolution of transverse flow and effective temperatures in the parton phase from a multi-phase transport model
• Evidence of quadrupole and octupole deformations in ${}^{96}$Zr+${}^{96}$Zr and ${}^{96}$Ru+${}^{96}$Ru collisions at ultra-relativistic energies
• Chiral magnetic effect reveals the topology of gauge fields in heavy-ion collisions
• Test the chiral magnetic effect with isobaric collisions
• Measurement of Charge Multiplicity Asymmetry Correlations in High Energy Nucleus-Nucleus Collisions at 200 GeV
• Chiral Magnetic Effect Task Force Report
• Experimental searches for the chiral magnetic effect in heavy-ion collisions
• Shape of atomic nuclei in heavy ion collisions
• Importance of isobar density distributions on the chiral magnetic effect search
• Predictions for $\sqrt{s_{NN}}=5.02$ TeV Pb+Pb Collisions from a Multi-Phase Transport Model
• Improved Quark Coalescence for a Multi-Phase Transport Model
• Probing triaxial deformation of atomic nuclei in high-energy heavy ion collisions
• Effects of final state interactions on charge separation in relativistic heavy ion collisions
• Determine the neutron skin type by relativistic isobaric collisions
• On the Charge Separation Effect in Relativistic Heavy Ion Collisions
• Probing the neutron skin with ultrarelativistic isobaric collisions
• Chiral Magnetic Effects in Nuclear Collisions
• Signatures of Chiral Magnetic Effect in the Collisions of Isobars
• Azimuthal Anisotropy Relative to the Participant Plane from AMPT in Central p+Au, d+Au, and ${}^3$He+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• Varying the chiral magnetic effect relative to flow in a single nucleus-nucleus collision
• $\alpha$-clustering effect on flows of direct photons in heavy-ion collisions
• Scaling approach to nuclear structure in high-energy heavy-ion collisions
• Impact of magnetic-field fluctuations on measurements of the chiral magnetic effect in collisions of isobaric nuclei
• Implications of the isobar run results for chiral magnetic effect in heavy ion collisions
• Probing nuclear structure with mean transverse momentum in relativistic isobar collisions
• Prediction of Nuclear Charge Density Distribution with Feedback Neural Network
• Predictions for isobaric collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 200 GeV from a multiphase transport model
• Anatomy of octupole correlations in ${}^{96}$Zr with a symmetry-restored multidimensionally-constrained covariant density functional theory
• Novel mechanism for electric quadrupole moment generation in relativistic heavy-ion collisions
• Dynamical exploring the QCD matter at finite temperatures and densities-a short review
• A flow paradigm in heavy-ion collisions
• Number-of-constituent-quark scaling of elliptic flow: a quantitative study
• Electromagnetic fields from the extended Kharzeev-McLerran-Warringa model in relativistic heavy-ion collisions
• Electromagnetic fields in small systems from a multiphase transport model
• Two- and three-particle nonflow contributions to the chiral magnetic effect measurement by spectator and participant planes in relativistic heavy ion collisions
• Search for the chiral magnetic effect in collisions between two isobars with deformed and neutron-rich nuclear structures
• Revisit the Chiral Magnetic Effect Expectation in Isobaric Collisions at the Relativistic Heavy Ion Collider
• Global constraint on the magnitude of anomalous chiral effects in heavy-ion collisions
• Sensitivity analysis of the chiral magnetic effect observables using a multiphase transport model
• Search for CME in U+U and Au+Au collisions in STAR with different approaches of handling backgrounds
• Dynamical development of proton cumulants and correlation functions in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV from a multiphase transport model
• Quantum color screening in external magnetic field
• Study on higher moments of net-charge multiplicity distributions using a multiphase transport model
• Probing fluctuations and correlations of strangeness by net-kaon cumulants in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV

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