Prompt photon and associated heavy quark production at hadron colliders with kt-factorization

Abstract

In the framework of the kt-factorization approach, the production of prompt photons in association with a heavy (charm or beauty) quarks at high energies is studied. The consideration is based on the O(αα_s^2) off-shell amplitudes of gluon-gluon fusion and quark-(anti)quark interaction subprocesses. The unintegrated parton densities in a proton are determined using the Kimber-Martin-Ryskin prescription. The analysis covers the total and differential cross sections and extends to specific angular correlations between the produced prompt photons and muons originating from the semileptonic decays of associated heavy quarks. Theoretical uncertainties of our evaluations are studied and comparison with the results of standard NLO pQCD calculations is performed. Our numerical predictions are compared with the recent experimental data taken by the D0 and CDF collaborations at the Tevatron. Finally, we extend our results to LHC energies.

14 pages, 10 figures

References in corpus (8)

• Parton distributions for the LHC
• The Charm Parton Content of the Nucleon
• Direct Photon Production in Association With A Heavy Quark At Hadron Colliders
• Heavy Flavour Production at Tevatron and Parton Shower Effects
• Prompt photon hadroproduction at high energies in off-shell gluon-gluon fusion
• Deep inelastic prompt photon production at HERA in the kt-factorization approach
• 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

Cited by in corpus (7)

• Measurement of the differential photon+ c-jet cross section and the ratio of differential photon+ c and photon+ b cross sections in proton-antiproton collisions at sqrt(s) = 1.96 TeV
• Transition between soft physics at LHC and low-x physics at HERA
• Associated production of $Z$ bosons and $b$-jets at the LHC in the combined $k_T$ + collinear QCD factorization approach
• The Physics of Heavy Quark Distributions in Hadrons: Collider Tests
• Electroweak Gauge-Boson Production in Association with b Jets at Hadron Colliders
• Isolated prompt photon pair production at hadron colliders with kt-factorization
• Review of physics results from the Tevatron: QCD physics