Di-Photon and Photon+b/c Production Cross Sections at Ecm=1.96 TeV
  Measurements of the di-photon cross section have been made in the central region and are found to be in good agreement with NLO QCD predictions. The cross section of events containing a photon and additional heavy flavour jet have also been measured, as well as the ratio of photon+b to photon+c. The statistically limited sample shows good agreement with Leading Order predictions. 
A. Gajjar (for the CDF Collaboration)