Prompt photon processes in photoproduction at HERA

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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 < EγΤ < 10 GeV, EjetΤ > 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.

Original languageEnglish
Pages (from-to)162-166
Number of pages5
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3
StatePublished - Mar 2000


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