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arxiv: 0906.4159 · v1 · submitted 2009-06-23 · ✦ hep-ph

High-energy resummation in direct photon production

classification ✦ hep-ph
keywords cross-sectiondirecthigh-energyphotonproductionresummationbeyondcenter-of-mass
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We present the computation of the direct photon production cross-section in perturbative QCD to all orders in the limit of high partonic center-of-mass energy. We show how the high-energy resummation can be performed consistently in the presence of a collinear singularity in the final state, we compare our results to the fixed order NLO cross-section in MSbar scheme, and we provide predictions at NNLO and beyond.

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