Photon isolation effects at NLO in γγ plus jet final states in hadronic collisions

We present the NLO QCD corrections to pp -> gamma gamma j production at hadron colliders. Our calculation includes contributions from the fragmentation of a hadronic jet into a highly energetic photon, and consequently allows the implementation of arbitrary infrared-safe photon isolation definitions. We compare different photon isolation criteria and perform a detailed study of the dependence of the gamma gamma j cross section on the photon isolation parameters.