Direct photon-charged hadron azimuthal correlations

TL;DR

This paper reports the first measurements of direct photon-charged hadron azimuthal correlations in gold-gold and proton-proton collisions at RHIC, providing insights into jet quenching and medium effects in heavy-ion collisions.

Contribution

It presents the first RHIC measurements of gamma-hadron azimuthal correlations in Au+Au collisions, expanding understanding of parton energy loss in quark-gluon plasma.

Findings

First measurement of gamma-hadron correlations at RHIC.

Data covers a broad range of collision centralities.

Results contribute to understanding jet quenching effects.

Abstract

Azimuthal correlations of direct photons at high transverse energy (8 $<$ E$_T$ $<$ 16 GeV) with away-side hadrons of transverse momentum (3 $<$ p$_T$ $<$ 6 GeV/c) have been measured over a broad range of centrality for $Au+Au$ collisions and $p+p$ collisions at $\sqrt{s_{NN}}$ = 200 GeV. The presented results are the first measurements at RHIC for $\gamma$-hadron azimuthal correlations in $Au+Au$ collisions.