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Chiral magnetic effect search in p(d)+Au, Au+Au collisions at RHIC

Research paper by Jie Zhao

Indexed on: 07 Feb '18Published on: 07 Feb '18Published in: arXiv - Nuclear Experiment



Abstract

The chiral magnetic effect (CME) refers to charge separation along a strong magnetic field of single-handed quarks, caused by interactions with topological gluon fields from QCD vacuum fluctuations. A major background of CME measurements in heavy-ion collisions comes from resonance decays coupled with elliptical flow anisotropy. These proceedings present two new studies from STAR to shed further light on the background issue: (1) small system p+Au and d+Au collisions where the CME signal is not expected, and (2) pair invariant mass dependence where resonance peaks can be identified.