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

TL;DR

This paper explores the potential of using jet-tagged back-scattering photons as a novel method to probe the quark-gluon plasma in high-energy nuclear collisions, aiming to distinguish these photons from other sources.

Contribution

It introduces a method to identify back-scattering photons via high energy jet triggers, providing a new approach for quark-gluon plasma tomography.

Findings

Feasibility of measuring back-scattering photons at RHIC and LHC

Distinct kinematic signatures enable separation from other photon sources

Potential to improve understanding of quark-gluon plasma properties

Abstract

Several sources of direct photons are known to contribute to the total photon yield in high energy nuclear collisions. All of these photons carry characteristic and important information on the initial nuclei or the hot and dense fireball created in the collision. We investigate the possibility to separate photons from back-scattering of high momentum quarks off quark gluon plasma from other sources. Their unique kinematics can be utilized through high energy jet triggers on the away-side. We discuss the basic idea and estimate the feasibility of such a measurement at RHIC and LHC.