Phys. Rev. D 61, 094004 (2000) [12 pages]Soft-gluon resummation and NNLO corrections for direct photon production |
Nikolaos Kidonakis and J. F. Owens
Physics Department, Florida State University, Tallahassee, Florida 32306-4350
Received 17 December 1999; published 31 March 2000
The resummation of threshold logarithms for direct photon production cross sections in hadronic collisions is presented. The resummation is based on the factorization properties of the cross section and is formulated at next-to-leading logarithmic or higher accuracy. Full analytical and numerical results for the next-to-next-to-leading order expansion of the resummed cross section are given. A substantial reduction of factorization scale dependence is observed. A comparison to experimental results from the E-706 and UA-6 experiments is presented.
©2000 The American Physical Society
URL: http://link.aps.org/abstract/PRD/v61/e094004
DOI: 10.1103/PhysRevD.61.094004
PACS: 13.85.Qk, 12.38.Bx, 12.38.Cy
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