Effects of Cluster Particle Correlations on Local Parity Violation Observables

TL;DR

This study shows that cluster particle correlations can fully explain azimuth correlator measurements related to local parity violation, suggesting no need for new physics explanations.

Contribution

It demonstrates that observed azimuth correlator signals can be explained by cluster correlations and anisotropy, challenging the necessity of invoking local parity violation.

Findings

Cluster correlations account for all observed azimuth correlator signals.

No evidence needed for local strong parity violation to explain data.

Results suggest conventional physics explains the measurements.

Abstract

We investigate effects of cluster particle correlations on two- and three-particle azimuth correlator observables sensitive to local strong parity violation. We use two-particle angular correlation measurements as input and estimate the magnitudes of the effects with straightforward assumptions. We found that the measurements of the azimuth correlator observables by the STAR experiment can be entirely accounted for by cluster particle correlations together with a reasonable range of cluster anisotropy in non-peripheral collisions. Our result suggests that new physics, such as local strong parity violation, may not be required to explain the correlator data.