Utilization of Event Shape in Search of the Chiral Magnetic Effect in Heavy-ion Collisions

Abstract

The search for the chiral magnetic effect (CME) has been a subject of great interest in the field of high-energy heavy-ion collision physics, and various observables have been proposed to probe the CME. Experimental observables are often contaminated with background contributions arising from collective motions (specifically elliptic flow) of the collision system. We present a method study of event-shape engineering (ESE) that projects the CME-sensitive ${\gamma }_{112}$ correlator and its variations (${\gamma }_{132}$ and ${\gamma }_{123}$) to a class of events with minimal flow. We discuss the realization of the zero-flow mode, the sensitivity on the CME signal, and the corresponding statistical significance for Au+Au, Ru+Ru, and Zr+Zr collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV with a multiphase transport (AMPT) model, as well as a new event generator, Event-By-Event Anomalous-Viscous Fluid Dynamics (EBE-AVFD).

12 pages, 15 figures

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Cited by in corpus (13)

• The Present and Future of QCD
• Implications of the isobar run results for chiral magnetic effect in heavy ion collisions
• Inferring nuclear structure from heavy isobar collisions using Trajectum
• Chiral Magnetic Effect in Heavy Ion Collisions: The Present and Future
• Anisotropic pressure of magnetized quark matter with anomalous magnetic moment
• Event Shape Selection Method in Search of the Chiral Magnetic Effect in Heavy-ion Collisions
• Search for the chiral magnetic wave using anisotropic flow of identified particles at RHIC
• Dilepton production from chirally asymmetric matter
• Collective modes of a massive fermion in a magnetized medium with finite anomalous magnetic moment
• Search for the chiral magnetic effect through beam energy dependence of charge separation using event shape selection
• The mass and spectral function of scalar and pseudoscalar mesons in a hot and chirally imbalanced medium using the two-flavor NJL model
• Investigating event-shape methods in the search for the chiral magnetic effect in relativistic heavy ion collisions
• Electromagnetic spectral functions in hot and dense chirally imbalanced quark matter