Photon emission in Pb+Pb collisions at SpS and LHC

TL;DR

This paper evaluates the yield of direct photons in Pb+Pb collisions at SpS and LHC energies, compares model predictions with experimental data at SpS, and discusses the potential for observing direct photons at LHC.

Contribution

It provides a comparative analysis of photon yield predictions across models and assesses the experimental observability of direct photons at LHC energies.

Findings

Model predictions align with SpS experimental data.

Uncertainty estimates for photon yield are provided.

Discussion on the feasibility of detecting direct photons at LHC.

Abstract

Yield of direct photons in Pb+Pb collisions at SpS and LHC energy is evaluated with emphasis on estimate of possible uncertainty. Possibility of experimental observation of direct photons at LHC is discussed. Predictions of several models at SpS energy are compared with experimental data.