Jet-Tagged Back-Scattering Photons For Quark Gluon Plasma Tomography

TL;DR

This paper proposes a method to identify back-scattering photons from quark-gluon plasma in high-energy nuclear collisions by correlating them with trigger jets, aiding in plasma tomography.

Contribution

It introduces a novel approach to distinguish back-scattering photons using photon-jet correlations, enhancing quark-gluon plasma diagnostics.

Findings

Back-scattering photons can be correlated with trigger jets.

The method is feasible for measurements at RHIC and LHC.

This approach improves separation of photon sources in nuclear collisions.

Abstract

Direct photons are important probes for quark gluon plasma created in high energy nuclear collisions. Various sources of direct photons in nuclear collisions are known, each of them endowed with characteristic information about the production process. However, it has been challenging to separate direct photon sources through measurements of single inclusive photon spectra and photon azimuthal asymmetry. Here we explore a method to identify photons created from the back-scattering of high momentum quarks off quark gluon plasma. We show that the correlation of back-scattering photons with a trigger jet leads to a signal that should be measurable at RHIC and LHC.