Results from STAR Beam Energy Scan Program

TL;DR

This paper reports on the STAR experiment's Beam Energy Scan results at RHIC, exploring QCD phase transitions and the quark-gluon plasma at various energies, and discusses future research directions.

Contribution

It provides new experimental data from BES Phase-I covering a range of energies and discusses implications for the QCD phase diagram and future experimental plans.

Findings

Evidence of sQGP signature turn-off at certain energies

Signals indicating the QCD phase boundary

Future BES Phase-II and fixed target program plans

Abstract

Results from the Beam Energy Scan (BES) program conducted recently by STAR experiment at RHIC are presented. The data from Phase-I of the BES program collected in Au+Au collisions at center-of-mass energies (\sqrt{s_{NN}}) of 7.7, 11.5, 19.6, 27, and 39 GeV cover a wide range of baryon chemical potential ?\mu_B (100-400 MeV) in the QCD phase diagram. Several STAR results from the BES Phase-I related to "turn-off" of strongly inter- acting quark-gluon plasma (sQGP) signatures and signals of QCD phase boundary are reported. In addition to this, an outlook is presented for the future BES Phase-II program and a possible fixed target program at STAR.