Probing QCD (media) with prompt photons
arXiv:0911.4609
Abstract
The QCD phenomenology of prompt photon production from e-p to p-p/p-pbar and A-A collisions is reviewed. The use of prompt photons as a probe of (i) parton distribution functions (in a proton or in nuclei) as well as (ii) fragmentation functions (into photons and hadrons) and their medium-modifications is highlighted.
10 pages, 8 figures. Invited talk given at Photon 2009, DESY, 11-15 May 2009