Scaling Behavior of Transverse Kinetic Energy Distributions in Au+Au Collisions at $\sqrt{s_{\rm NN}}=200$ GeV

TL;DR

This paper investigates the scaling properties of transverse energy distributions in gold-gold collisions at 200 GeV, revealing that pion and proton distributions can be described separately within a cluster formation framework.

Contribution

It demonstrates that universal transverse energy distributions can be modeled separately for pions and protons using a cluster formation and decay mechanism.

Findings

Universal transverse energy distributions for pions and protons can be described separately.

Scaling properties depend on the particle type within the cluster framework.

The model does not describe pion and proton distributions simultaneously.

Abstract

With the experimental data from STAR on the centrality dependence of transverse momentum $p_T$ spectra of pions and protons in Au+Au collisions at $\sqrt{s_{NN}}=200 {\rm GeV}$, we investigate the scaling properties of transverse energy $E_T$ distributions at different centralities. In the framework of cluster formation and decay mechanism for particle production, the universal transverse energy distributions for pion and proton can be described separately but not simultaneously.