Prompt photon hadroproduction at high energies in off-shell gluon-gluon fusion

Journal Article · Tue Apr 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.074024· OSTI ID:21249949

Baranov, S P ^[1]; Lipatov, A V; Zotov, N P ^[2]

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1. P.N. Lebedev Physics Institute, 119991 Moscow (Russian Federation)
2. D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, 119991 Moscow (Russian Federation)

The amplitude for the production of a single photon associated with a quark pair in the fusion of two off-shell gluons is calculated. The matrix element found is applied to the inclusive prompt photon hadroproduction at high energies in the framework of the k{sub T}-factorization QCD approach. The total and differential cross sections are calculated in both central and forward pseudorapidity regions. The conservative error analysis is performed. We used the unintegrated gluon distributions in a proton which were obtained from the full Catani-Ciafaloni-Fiorani-Marchesini (CCFM) evolution equation as well as from the Kimber-Martin-Ryskin prescription. Theoretical results were compared with recent experimental data taken by the D0 and CDF collaborations at Fermilab Tevatron. Theoretical predictions for the LHC energies are given.

• OSTI ID: 21249949
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
EQUATIONS
EVOLUTION
FACTORIZATION
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
FORECASTING
GLUON-GLUON INTERACTIONS
GLUONS
MATRIX ELEMENTS
PARTICLE RAPIDITY
PHOTONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARKS
TOTAL CROSS SECTIONS