Study of production of (anti)deuteron observed in Au+Au collisions at $\sqrt{S_{NN}}$=14.5, 62.4 and 200 GeV

TL;DR

This study analyzes the transverse momentum distributions of (anti)deuterons in gold-gold collisions at various energies and centralities, revealing how collision centrality influences nuclear stopping and particle production.

Contribution

It applies the multisource thermal model and Tsallis distribution to describe the spectra across different energies and centralities, providing new insights into collision dynamics.

Findings

Parameters increase with collision centrality

Nuclear stopping degree increases with centrality

Transverse momentum spectra are well described by Tsallis distribution

Abstract

Transverse momentum distributions of deuterons and anti-deuterons in Au+Au collisions at $\sqrt{S_{NN}}$=14.5, 62.4 and 200 GeV with different centrality are studied in the framework of the multisource thermal model. Transverse momentum spectra are conformably and approximately described by the Tsallis distribution. The dependence of parameters (average transverse momenta, effective temperature and entropy index) on event centrality are obtained. It is found that the parameters increase with increase of the average number of particles involved in collisions, which reveals the nuclear stopping degree increases with collision centrality.