Next-to-next-to-leading-order soft-gluon corrections in direct photon production

Details Next-to-next-to-leading-order soft-gluon corrections in direct photon production Next-to-next-to-leading-order soft-gluon corrections in direct photon production

2003-07-29

arxiv.org/abs/hep-ph/0307352v1

Int.J.Mod.Phys. A19 (2004) 149-158

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures

Scientific paper

10.1142/S0217751X04017458

Previous work on soft-gluon resummation for direct photon production is extended to include additional subleading logarithmic terms through O(alpha alpha_s^3) and some representative comparisons are made to experimental results from the E-706 and UA-6 Collaborations. The additional terms are small in magnitude, indicating good convergence properties to the level of accuracy calculated. The scale dependence remains much smaller than that of the next-to-leading-order calculation.

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