Quantification of the Chiral Magnetic Effect in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV

Abstract

The Multi-Phase Transport model, AMPT, and the Anomalous Viscous Fluid Dynamics model, AVFD, are used to assess a possible chiral-magnetically-driven charge separation ($\Delta S$) recently measured with the $R_{{\Psi }_2}(\Delta S)$ correlator in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV. The Comparison of the experimental and simulated $R_{{\Psi }_2}(\Delta S)$ distributions indicates that background-driven charge separation is insufficient to account for the measurements. The AVFD model calculations, which explicitly account for CME-driven anomalous transport in the presence of background, indicate a CME signal quantified by the $P$-odd Fourier dipole coefficient $a_1^{\prime }\approx 0.5\%$ in mid-central collisions. A similar evaluation for the $\Delta \gamma$ correlator suggests that only a small fraction of this signal ($f_{\mathrm{CME}}=\Delta {\gamma }_{\mathrm{CME}}/\Delta \gamma \approx 25\%$) is measurable with this correlator in the same collisions. The related prediction for signal detection in isobaric collisions of Ru+Ru and Zr+Zr are also presented.

arXiv comment5 pages, 3 figures, submitted for publication. arXiv admin note: text overlap with arXiv:2002.07934

References in corpus (26)

• The Chiral Magnetic Effect
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Hydrodynamics with Triangle Anomalies
• Strange Quark Matter and Compact Stars
• Chiral Magnetic and Vortical Effects in High-Energy Nuclear Collisions --- A Status Report
• Dirac Fermions in Solids - from High Tc cuprates and Graphene to Topological Insulators and Weyl Semimetals
• Parity violation in hot QCD: why it can happen, and how to look for it
• Primordial Magnetic Fields, Right Electrons, and the Abelian Anomaly
• Parity violation in hot QCD: how to detect it
• Electromagnetic fields and anomalous transports in heavy-ion collisions --- A pedagogical review
• Elliptic and triangular flow in p+Pb and peripheral Pb+Pb collisions from parton scatterings
• Anomalous Chiral Transport in Heavy Ion Collisions from Anomalous-Viscous Fluid Dynamics
• Chiral Effects and Cosmic Magnetic Fields
• Chiral Magnetic Effect Task Force Report
• Anomalous transport effects and possible environmental symmetry "violation" in heavy ion collisions
• Quantifying Chiral Magnetic Effect from Anomalous-Viscous Fluid Dynamics
• Off-equilibrium sphaleron transitions in the Glasma
• Effects of final state interactions on charge separation in relativistic heavy ion collisions
• On the Charge Separation Effect in Relativistic Heavy Ion Collisions
• A New Correlator to Detect and Characterize the Chiral Magnetic Effect
• Views of the Chiral Magnetic Effect
• Signatures of Chiral Magnetic Effect in the Collisions of Isobars
• Chiral kinetic approach to the chiral magnetic effect in isobaric collisions
• Medium modifications of jet shapes in Pb+Pb collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 2.76 TeV within a multiphase transport model
• Sensitivity analysis of the chiral magnetic effect observables using a multiphase transport model
• A sensitivity study of the primary correlators used to characterize chiral-magnetically-driven charge separation