Global polarization and parity violation study in Au+Au collisions

TL;DR

This paper investigates parity violation effects and global system polarization in gold-gold collisions at RHIC, using azimuthal correlations and hyperon polarization measurements to explore fundamental symmetry violations in high-energy nuclear physics.

Contribution

It provides new measurements of parity violation effects and hyperon polarization in Au+Au collisions at 62 GeV, advancing understanding of symmetry violations in quark-gluon plasma.

Findings

No significant parity violation signals detected.

Measured hyperon polarization consistent with previous results.

Results contribute to understanding of fundamental symmetry in nuclear matter.

Abstract

We present results on the parity violation effects and global system polarization measurements in Au+Au collisions at sqrt(s_NN) = 62 GeV obtained with the STAR detector at RHIC. The parity violation effects are studied by three particle azimuthal correlations of charged particles. The global polarization of the system is examined by measuring the polarization of strange hyperons with respect to the collision reaction plane.