Anisotropy results from 193 GeV U+U collisions at RHIC

TL;DR

This paper reports measurements of azimuthal anisotropy and charge separation in uranium-uranium collisions at 193 GeV, providing insights into the quark-gluon plasma and local parity violation effects.

Contribution

It presents the first detailed measurement of azimuthal anisotropy coefficients v_n for n=1-5 in U+U collisions at RHIC, including charge separation related to local parity violation.

Findings

Measured v_n coefficients for n=1-5 as functions of p_T and centrality.

Observed charge separation signals consistent with local parity violation.

Provided data for understanding anisotropic flow in heavy-ion collisions.

Abstract

We report the measurement of azimuthal anisotropy $v_{n}$ for n = 1-5 as a function of transverse momentum $p_{T}$ and centrality in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV, recorded with the STAR detector at RHIC. We also present results on $v_{2}$ and azimuthal correlator related to charge separation across the reaction plane due to local parity violation(LPV) in the ultra-central collisions.