Dijet Cross Sections in Photoproduction at HERA

Abstract

Dijet production by almost real photons has been studied at HERA with the ZEUS detector. Jets have been identified using the cone algorithm. A cut on xg, the fraction of the photon energy participating in the production of the two jets of highest transverse energy, is used to define cross sections sensitive to the parton distributions in the proton and in the photon. The dependence of the dijet cross sections on pseudorapidity has been measured for xg $\ge 0.75$ and xg $<0.75$. The former is sensitive to the gluon momentum density in the proton. The latter is sensitive to the gluon in the photon. The cross sections are corrected for detector acceptance and compared to leading order QCD calculations.

21 pages, latex, 4 figures appended as uuencoded file

References in corpus (4)

• Parton Distributions of the Proton
• Measurement of the $D^{\ast \pm }$ Cross Section using a Soft-Pion Analysis in Two-Photon Processes
• Direct Photoproduction of Jets in the KT Factorisation Prescription
• On the photoproduction of jets at HERA

Cited by in corpus (43)

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• Theory of hard photoproduction
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• New Parton Distribution Functions for the Photon
• Inclusive Parton Cross Sections in Photoproduction and Photon Structure
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• Heavy Flavour Physics at HERA - a Survey
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• Resolved Photon Processes
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