Photoproduction of isolated photons at HERA in NLO QCD

Details Photoproduction of isolated photons at HERA in NLO QCD Photoproduction of isolated photons at HERA in NLO QCD

2001-10-18

arxiv.org/abs/hep-ph/0110250v1

J.Phys.G28:843-856,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex(iopams style files included),14 pages,17 ps and 4 eps figures, talk at Ringberg Workshop: New Trends in HERA Physics 200

Scientific paper

10.1088/0954-3899/28/5/310

The NLO QCD calculation for the photoproduction of the isolated photon with a large $p_T$ at the HERA $ep$ collider is presented. The single resolved photon contribution and the QCD corrections of order $\alpha_s$ to the Born term are consistently included. The sizeable NNLO contributions, the box and the double resolved photon subprocesses, are taken into account in addition. The importance of the isolation cut, as well as the influence of other experimental cuts on the p_T and rapidity eta_gamma distributions are discussed in detail. Results are compared with experimental data and with the different NLO calculations.

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