Particle correlators and possible local parity violation in nuclear collisions

The complex topology structure of the vacuum of quantum chromodynamics (QCD) can lead to local violation of the P/CPinvariance of strong interactions. The preliminary estimations of magnetic field and correlators within the model of chiral magnetic effect are presented for types of nuclei and collision energies corresponded to RHIC and the LHC beams. These correlators characterized the asymmetry of the emission of charged particles with respect to the reaction plane in non-central nucleus-nucleus collisions are calculated for two various nuclear densities, namely, for approach of rigid sphere and for two-component Fermi model. The centrality dependence is under consideration for correlators integrated over other kinematic parameters. The correlator magnitudes depend on collision energy weakly for Cu + Cu and Au + Au collisions. The same-charge correlator shows noticeable increasing with growth of atomic number for symmetric collisions. Also magnetic field and centrality dependence of correlator are obtained for asymmetric Cu + Au collisions