Centrality Dependence of Direct Photon Production in sqrt(s_NN) = 200   GeV Au+Au Collisions
  The first measurement of direct photons in Au+Au collisions at sqrt(s_NN) = 200 GeV is presented. The direct photon signal is extracted as a function of the Au+Au collision centrality and compared to NLO pQCD calculations. The direct photon yield is shown to scale with the number of nucleon-nucleon collisions for all centralities. 
PHENIX Collaboration: S.S. Adler, et al