Beyond leading-logarithm photon production from two-loop diagrams in a hot QCD medium

Sumit; Ritesh Ghosh; Munshi G. Mustafa

Beyond leading-logarithm photon production from two-loop diagrams in a hot QCD medium

High Energy Physics - Phenomenology 2026-07-27 v1 Nuclear Theory

Authors: Sumit , Ritesh Ghosh , Munshi G. Mustafa

Abstract

We investigate high-energy photon production from a quark-gluon plasma by evaluating the imaginary part of the two-loop photon self-energies in thermal QCD. Working within the imaginary-time formalism, we derive analytical expressions for both the leading-logarithmic and the beyond-leading-logarithmic contributions to the photon production rate. The rates obtained within the thermal field theoretical framework agree with those derived from kinetic theory calculations for the relevant photon-production processes.

Keywords

photon production quark-gluon plasma two-loop self-energy thermal qcd leading logarithm imaginary-time formalism

Cite

@article{arxiv.2607.24950,
  title  = {Beyond leading-logarithm photon production from two-loop diagrams in a hot QCD medium},
  author = {Sumit and Ritesh Ghosh and Munshi G. Mustafa},
  journal= {arXiv preprint arXiv:2607.24950},
  year   = {2026}
}

Comments

41 pages, 5 figures