Soft-gluon resummation and NNLO corrections for direct photon production

1999/12/16 by Nikolaos Kidonakis, J. F. Owens · 5 citations
Mathematics · Physics and Astronomy · #Algorithm #Cross section (physics) #Factorization #Gluon #Hadron #High-Energy Particle Collisions Research #Logarithm #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Resummation #hep-ph

paper · pdf · doi:10.1103/physrevd.61.094004

published as Phys.Rev. D61 (2000) 094004 · 26 pages LaTeX, 8 figures

arxiv created 1999/12/16 · openalex publication_date 2000/03/31 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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.

Citations

• Evolution of color exchange in QCD hard scattering
• Constraints on the proton's gluon distribution from prompt photon production
• Threshold resummation for dijet cross sections
• Resummed heavy quark production cross sections to next-to-leading logarithm
• Sudakov factorization and resummation

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