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

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Abstract

In the framework of the k T -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 \( \mathcal{O}\left( {\alpha \alpha_s^2} \right) \) 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 D∅ and CDF collaborations at the Tevatron. Finally, we extend our results to LHC energies.

Keywords

QCD Phenomenology Hadronic Colliders 
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Copyright information

© SISSA, Trieste, Italy 2012

Authors and Affiliations

  1. 1.Skobeltsyn Institute of Nuclear PhysicsLomonosov Moscow State UniversityMoscowRussia

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