Prompt photon hadroproduction at high energies in the k_T-factorization approach

Details Prompt photon hadroproduction at high energies in the k_T-factorization approach Prompt photon hadroproduction at high energies in the k_T-factorization approach

2005-07-20

arxiv.org/abs/hep-ph/0507243v1

J.Phys.G34:219,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 13 figures

Scientific paper

10.1088/0954-3899/34/2/005

We consider the prompt photon production at high energy hadron colliders in the framework of k_T-factorization approach. The unintegrated quark and gluon distributions in a proton are determined using the Kimber-Martin-Ryskin prescription. The conservative error analisys is performed. We investigate both inclusive prompt photon and prompt photon and associated muon production rates. In Standard Model such events come mainly due to Compton scattering process where the final heavy (charm or bottom) quark produces a muon. The theoretical results are compared with recent experimental data taken by the D0 and CDF collaborations at Fermilab Tevatron. Our analysis also covers the azimuthal correlations between produced prompt photon and muon which can provide an important information about non-collinear parton evolution in a proton. Finally, we extrapolate the theoretical predictions to CERN LHC energies.

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