Prompt photons with associated jets in photoproduction at HERA

Details Prompt photons with associated jets in photoproduction at HERA Prompt photons with associated jets in photoproduction at HERA

2007-05-18

arxiv.org/abs/0705.2700v1

Physics

High Energy Physics

High Energy Physics - Experiment

Proceedings of the XV International Workshop on Deep Inelastic Scattering (DIS07 April 16-20, 2007, Munich, Germany)

Scientific paper

Prompt photons, together with an accompanying jet, have been studied in the photoproduction regime of ep scattering with the ZEUS detector at HERA. Predictions based on leading-logarithm parton-shower Monte Carlo models and next-to-leading-order (NLO) QCD underestimate the gamma+jet cross sections for transverse energies of prompt photons below 7 GeV, while the kT-factorisation QCD calculation agrees with the data in this region.

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