Using two- and Three-particle correlations to probe strongly interacting partonic matter

TL;DR

This paper presents recent two- and three-particle correlation measurements from PHENIX, revealing conical emission patterns and geometry-dependent modifications of away-side jets, providing insights into strongly interacting partonic matter.

Contribution

It introduces new correlation measurements that demonstrate conical emission and geometry-dependent jet modifications in heavy-ion collisions.

Findings

Three-particle correlations show conical emission patterns.

Two-particle correlations reveal shape and yield modifications of jets.

Jet energy loss and medium response depend on collision geometry.

Abstract

The latest two- and three-particle correlation measurements obtained by the PHENIX collaboration are presented. Three-particle correlations are consistent with the presence of conical emission patterns in the data. Two-particle correlations relative to the collision geometry reveal strong shape and yield modifications of the away-side jet, that depend on the orientation of the trigger particle with respect to the event plane. A difference in the geometry dependence of the per trigger yields in the regions around $\Delta\phi \approx \pi$ and $\Delta\phi \approx \pi \pm 1.1$ can be understood by a different geometry dependence of jet energy loss and the medium response to the deposited energy.