Estimation of the chiral magnetic effect considering the magnetic field response of the QGP medium

TL;DR

This paper estimates the chiral magnetic effect in heavy-ion collisions by considering the QGP medium's magnetic response, showing improved agreement with experimental data at RHIC energies.

Contribution

It introduces a method to estimate the chiral magnetic effect that accounts for the QGP medium's magnetic response, enhancing the understanding of magnetic field lifetime effects.

Findings

Better explanation of experimental results at RHIC energies.

Magnetic field response extends the effective lifetime in the QGP.

Results align more closely with RHIC data than LHC data.

Abstract

The magnetic field plays a major role in the searching of the chiral magnetic effect in relativistic heavy-ion collisions. If the lifetime of the magnetic field is too short, as expected by simulations of the field in the vacuum, the chiral magnetic effect will be largely suppressed. However, the lifetime of the magnetic field will become longer when the QGP medium response is considered. We give an estimate of the effect, especially considering the magnetic field response of the QGP medium, and compare it with the experimental results of background-subtracted correlator $H$ at RHIC and LHC energies. The results show that our method explains better for the experimental results at the top RHIC energy than that of the LHC energy.