Isolated photon production in proton-nucleus collisions at forward rapidity

TL;DR

This paper predicts isolated photon production in proton-nucleus collisions at forward rapidity using the Color Glass Condensate framework, providing theoretical results for upcoming RHIC and LHC experiments.

Contribution

It applies the dipole cross section from the running coupling Balitsky-Kovchegov equation to calculate photon production, updating nuclear modification factors for pion production.

Findings

Predictions for photon production at RHIC and LHC energies.

Updated nuclear modification factors for pion production.

Theoretical framework using dipole cross sections from BK evolution.

Abstract

We calculate isolated photon production at forward rapidities in proton-nucleus collisions in the Color Glass Condensate framework. Our calculation uses dipole cross sections solved from the running coupling Balitsky-Kovchegov equation with an initial condition fit to deep inelastic scattering data. For comparison, we also update the results for the nuclear modification factor for pion production in the same kinematics. We present predictions for future forward RHIC and LHC measurements at $\sqrt{s_{NN}}=200$ GeV and $\sqrt{s_{NN}}=8$ TeV.