Prompt photon processes in photoproduction at HERA

Details Prompt photon processes in photoproduction at HERA Prompt photon processes in photoproduction at HERA

1999-11-30

arxiv.org/abs/hep-ex/9911051v1

Nucl.Phys.Proc.Suppl. 82 (2000) 162-166

Physics

High Energy Physics

High Energy Physics - Experiment

Talk given at Photon99 Conference, Freiburg, Germany

Scientific paper

10.1016/S0920-5632(00)00148-1

We present results for the photoproduction of inclusive prompt photons and for prompt photons accompanied by jets, measured with the ZEUS detector at HERA. Cross sections as a function of pseudorapidity and transverse energy are presented for 5 < E_T^\gamma < 10 GeV, E_T^{jet} > 5 GeV in the centre of mass energy range 120-270 GeV. Comparisons are made with predictions from leading logarithm parton shower Monte Carlos and next-to-leading order QCD calculations using currently available models of the photon structure. NLO QCD calculations describe the shape and magnitude of the measurements reasonably well.

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