Recent Highlights from the STAR Experiment

TL;DR

This paper summarizes recent correlation and fluctuation measurements from the STAR experiment's RHIC BES-II data, focusing on higher-order net-proton cumulants and transverse momentum correlations in Au+Au collisions across various energies.

Contribution

It presents new measurements of higher-order net-proton cumulants and transverse momentum correlations, providing insights into the QCD phase diagram and fluctuation phenomena.

Findings

Higher-order net-proton cumulants measured across energies 7.7-27 GeV.

Transverse momentum correlations analyzed for centrality dependence.

Results contribute to understanding QCD critical point and phase transition.

Abstract

We summarize the latest correlation and fluctuation measurements derived from the RHIC Beam Energy Scan-II (BES-II) data, collected by the STAR experiment. We will focus on the recent results of higher-order net-proton cumulants ($C_{1}-C_{4}$) in the energy range of 7.7 to 27 GeV Au+Au collisions. Furthermore, we will present measurements of transverse momentum correlations of charged particles, particularly focusing on 2-particle correlators and their dependency on centrality in 3.0 and 3.2 GeV Au+Au collisions.