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

Abstract

The amplitude for production of a single photon associated with 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 kt-factorization QCD approach. The total and differential cross sections are calculated in both central and forward pseudo-rapidity regions. The conservative error analisys is performed. We used the unintegrated gluon distributions in a proton which were obtained from the full 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.

32 pages, 18 figures

References in corpus (5)

• A new critical study of photon production in hadronic collisions
• Photon-jet correlations in $pp$ and $p\bar{p}$ collisions
• Parton transverse momenta and direct photon production in hadronic collisions at high energies
• Reggeized quark -- Reggeized quark -- gluon effective vertex
• Critical tests of unintegrated gluon distributions

Cited by in corpus (11)

• Sensitivity of isolated photon production at TeV hadron colliders to the gluon distribution in the proton
• Production of electroweak gauge bosons in off-shell gluon-gluon fusion
• Reconsideration of the inclusive prompt photon production at LHC with kt-factorization
• Deep inelastic prompt photon production at HERA in the kt-factorization approach
• Prompt photon and associated heavy quark production at hadron colliders with kt-factorization
• Associated production of prompt photons and heavy quarks in off-shell gluon-gluon fusion
• Testing for kt-factorization with inclusive prompt photon production at LHC
• Prompt photon production in proton collisions as a probe of parton scattering in high energy limit
• Isolated prompt photon pair production at hadron colliders with kt-factorization
• The P-P(P) cross-section of isolated single-photon production in the $k_t$-factorization and different angular ordering unintegrated parton distributions frameworks
• Single photon production in ppBar collision in the collinear and kt-factorisation framework and investigation of their differences