Chiral Magnetic Effect and Chiral Phase Transition

TL;DR

This paper investigates how the chiral phase transition affects the chiral magnetic effect, predicting observable changes in charge-particle correlations that can signal QCD phase transitions in RHIC experiments.

Contribution

It introduces a method to connect azimuthal charge-particle correlations with the QCD phase transition, providing a potential experimental signature.

Findings

Pronounced cusp in correlations at critical temperature

Suppression of correlations at lower collision energies

Charge-particle correlations as signals of QCD phase transition

Abstract

We study the influence of the chiral phase transition on the chiral magnetic effect. The azimuthal charge-particle correlations as functions of the temperature are calculated. It is found that there is a pronounced cusp in the correlations as the temperature reaches its critical value for the QCD phase transition. It is predicted that there will be a drastic suppression of the charge-particle correlations as the collision energy in RHIC decreases to below a critical value. We show then the azimuthal charge-particle correlations can be the signal to identify the occurrence of the QCD phase transitions in RHIC energy scan experiments.