Prompt photons in heavy ion collisions at the LHC: A ''multi-purpose'' observable

Abstract

I emphasize in this contribution how prompt photons can be used to probe nuclear parton densities as well as medium-modified fragmentation functions in heavy ion collisions. Various predictions in p-A and A-A collisions at LHC energies are given.

Comments: 2 pages, 2 figures. Presented at the Workshop on Heavy Ion Collisions at the LHC: Last Call for Predictions, CERN, 14 May-8 Jun 2007