Prompt photon photoproduction at HERA in the k_T-factorization approach

Details Prompt photon photoproduction at HERA in the k_T-factorization approach Prompt photon photoproduction at HERA in the k_T-factorization approach

2005-06-06

arxiv.org/abs/hep-ph/0506044v1

Phys.Rev. D72 (2005) 054002

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages, 18 figures

Scientific paper

10.1103/PhysRevD.72.054002

We present calculations of the prompt photon photoproduction at HERA collider in the k_T-factorization approach. Both direct and resolved contributions are taken into account. The conservative error analisys is performed. The unintegrated parton densities in a proton and in a photon are determined using the Kimber-Martin-Ryskin prescription. We investigate both inclusive and associated with jet prompt photon photoproduction rates. In particular, we study the angular correlations between produced photon and hadronic jet in the transverse momentum plane which can provide a unique information about non-collinear evolution dynamics. We compare our theoretical predictions with recent experimental data taken by the H1 and ZEUS collaborations.

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