The rapidity and thermal motion induced transverse momentum distributions of identified charged particles produced in Au-Au collisions at RHIC energies

TL;DR

This paper employs a hydrodynamic model incorporating thermal motion to analyze the rapidity and transverse momentum distributions of charged particles in Au-Au collisions at RHIC, successfully matching experimental data.

Contribution

It introduces a hydrodynamic model with phase transition effects that accurately describes particle distributions in heavy ion collisions.

Findings

Model matches experimental data well

Thermal motion significantly influences particle distributions

Hydrodynamics effectively describes QGP expansion

Abstract

It is widely believed that the quark-gluon plasma (QGP) might be formed in the current heavy ion collisions. It is also widely recognized that the relativistic hydrodynamics is one of the best tools for describing the process of expansion and particlization of QGP. In this paper, by taking into account the effects of thermal motion, a hydrodynamic model including phase transition from QGP state to hadronic state is used to analyze the rapidity and transverse momentum distributions of identified charged particles produced in heavy ion collisions. A comparison is made between the theoretical results and experimental data. The theoretical model gives a good description to the corresponding measurements made in Au-Au collisions at RHIC energies.