Effect of the Wood-Saxon nuclear distribution on the chiral magnetic field in Relativistic Heavy-ion Collisions

TL;DR

This paper investigates how using the Wood-Saxon nuclear distribution affects the calculation of the chiral magnetic field in relativistic heavy-ion collisions, predicting field distributions at LHC energies.

Contribution

It introduces an improved magnetic field calculation method incorporating the Wood-Saxon distribution, enhancing accuracy over previous uniform models.

Findings

Predicted chiral magnetic field distributions at LHC energies.

Demonstrated the impact of nucleon distribution choice on magnetic field calculations.

Included contributions of produced quarks to the magnetic field.

Abstract

The formation of the QCD vacuum with nonzero winding number $Q_w$ during relativistic heavy-ion collisions breaks the parity and charge-parity symmetry. A new kind of field configuration can separate charge in the presence of a background magnetic field-the "chiral magnetic effect". The strong magnetic field and the QCD vacuum can both completely be produced in the noncentral nuclear-nuclear collision. Basing on the theory of Kharzeev,Mclerran and Warringa, we use the Wood-Saxon nucleon distribution to replace that of the uniform distribution to improve the magnetic field calculation method of the noncentral collision. The chiral magnetic field distribution at LHC(Large Hadron Collider) energy regions are predicted. We also consider the contributions to the magnetic field of the total charge given by the produced quarks.