Sudakov Resummation Effects in Prompt-Photon Hadroproduction

Abstract

We compute the effects of soft-gluon resummation, at the next-to-leading-logarithmic level, in the fixed-target hadroproduction cross section for prompt photons. We find in general that the corrections to the fixed next-to-leading-order results are large for large renormalization scales, and small for small scales. This leads to a significant reduction of the scale dependence of the results for most experimental configurations of interest. We compare our results to the recent measurements by the E706 and UA6 collaborations.

30 pages, Latex, epsfig, amssymb, 17 figures. Submitted to JHEP

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