Identified Hadron Production from the RHIC Beam Energy Scan

TL;DR

This paper reports on the measurement of identified hadron production in gold-gold collisions at various energies at RHIC, providing insights into the QCD phase diagram through analysis of particle yields and collision dynamics.

Contribution

It presents new experimental data on identified hadron production at multiple energies, enhancing understanding of the QCD phase diagram and freeze-out conditions.

Findings

Particle ratios vary with collision energy.

Chemical and kinetic freeze-out parameters are extracted.

Results contribute to mapping the QCD phase diagram.

Abstract

A current focus at RHIC is the Beam Energy Scan to study the QCD phase diagram -- temperature ($T$) vs. baryon chemical potential ($\mu_{B}$). The STAR experiment has collected data for Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7 GeV, 11.5 GeV, and 39 GeV in the year 2010. We present midrapidity results on rapidity density, average transverse mass, and particle ratios for identified hadrons from the STAR experiment. Collision dynamics are studied in the framework of chemical and kinetic freeze-out conditions.