An Overview of STAR Experimental Results

TL;DR

This paper reviews the STAR experiment's recent results in high-energy nuclear collisions, focusing on the quark-gluon plasma, QCD phase diagram, and future research directions at RHIC.

Contribution

It provides an overview of recent experimental findings from STAR, especially from the RHIC beam energy scan, highlighting advances in understanding QGP and the QCD phase diagram.

Findings

Insights into the properties of the sQGP at RHIC.

Results from the RHIC beam energy scan program.

Future plans for STAR's physics research at RHIC.

Abstract

With large acceptance and excellent particle identification, STAR is one of the best mid-rapidity collider experiments for studying high-energy nuclear collisions. The STAR experiment provides full information on initial conditions, properties of the hot and dense medium as well as the properties at freeze-out. In Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV, STAR's focus is on the nature of the sQGP produced at RHIC. In order to explore the properties of the QCD phase diagram, since 2010, the experiment has collected sizable data sets of Au+Au collisions at the lower collision energy region where the net-baryon density is large. At the 2014 Quark Matter Conference, the STAR experiment made 16 presentations that cover physics topics including {\it collective dynamics}, {\it electromagnetic probes}, {\it heavy flavor}, {\it initial state physics}, {\it jets}, {\it QCD phase diagram}, {\it thermodynamics and hadron chemistry}, and {\it future experimental facilities, upgrades, and instrumentation} [1-16]. In this overview we will highlight a few results from the STAR experiment, especially those from the recent measurements of the RHIC beam energy scan program. At the end, instead of a summary, we will discuss STAR's near future physics programs at RHIC.