Systematic Searches for the Chiral Magnetic Effect and the Chiral Vortical Effect Using Identi ed Particles at RHIC/STAR

16th International Conference on Strangeness in Quark Matter

Wen, Liwen^1

University of California, Los Angeles

CA, United States^1

关键词: Au+Au collisions;    Charge separations;    Hierarchical structures;    Magnetic effects;    Particle correlations;    Star measurements;    Systematic searches;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/779/1/012067/pdf
DOI  :  10.1088/1742-6596/779/1/012067

来源: IOP

【 摘 要 】

STAR measurements of identi-ed-particle correlations in Au+Au collisions at √sNN = 200 GeV are used to explore possible hierarchical structures in the particle-dependent correlations due to the chiral magnetic effect (CME) and the chiral vortical effect (CVE). Correlations of p-π (p-λ), sensitive to the possible CME (CVE), are reported and compared with hadron-hadron (h-h) correlation, yielding a charge separation ordering (p-λ > p-π ∼ h-h). The estimated background strength from transverse momentum conservation (TMC) hardly shows any centrality dependence. For Au+Au collisions at 19.6, 39 and 200 GeV, clear signals above the background are observed for mid-central and peripheral collisions while results from central collisions (