NLO Calculation of Prompt Photon Production in DIS at HERA
  We present a NLO calculation of prompt photon production in DIS. The calculation involves direct, fragmentation and resolved contributions. It is performed in the virtual-photon proton center-of-mass system. A comparison of the theoretical results with HERA data is carried out. 
P. Aurenche, Rahul Basu and M. Fontannaz
hep-ph