Progress on the experimental search for CME, CVE, and CMW

Abstract

In quantum chromodynamics, the interactions of quarks with the topological gluon fields can lead to local P and CP violations, which may provide a solution to the strong CP problem and a possibility to explain the asymmetry of matterantimatter in the current universe. Under a strong magnetic field, the P and CP violations will lead to the separation of particles according to their electric charges, which is called the chiral magnetic effect (CME). An observation of the CMEinduced charge separation would confirm several fundamental properties of QCD, namely, approximate chiral symmetry restoration, topological charge fluctuations, and local parity violation. In relativistic heavy-ion collisions, there are other chiral anomalous effects similar to the CME, such as the chiral vortical effect (CVE), and the chiral magnetic wave (CMW). This review briefly summarizes the current experimental progress of the CME, CVE, and CMW searches in relativistic heavyion collisions.