Detailed Comparison of Next-to-Leading Order Predictions for Jet Photoproduction at HERA

Details Detailed Comparison of Next-to-Leading Order Predictions for Jet Photoproduction at HERA Detailed Comparison of Next-to-Leading Order Predictions for Jet Photoproduction at HERA

1999-05-14

arxiv.org/abs/hep-ph/9905348v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 7 eps-figures. To appear in the Proceedings of the Workshop on ``Monte Carlo Generators for HERA Physics'', Hamburg

Scientific paper

The precision of new HERA data on jet photoproduction opens up the possibility to discriminate between different models of the photon structure. This requires equally precise theoretical predictions from perturbative QCD calculations. In the past years, next-to-leading order calculations for the photoproduction of jets at HERA have become available. Using the kinematic cuts of recent ZEUS analyses, we compare the predictions of three calculations for different dijet and three-jet distributions. We find that in general all three calculations agree within the statistical accuracy of the Monte Carlo integration yielding reliable theoretical predictions. In certain restricted regions of phase space, the calculations differ by up to 5%.

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