Multiparton Interactions in Photoproduction at HERA

Details Multiparton Interactions in Photoproduction at HERA Multiparton Interactions in Photoproduction at HERA

1996-01-30

arxiv.org/abs/hep-ph/9601371v1

Z.Phys.C72:637-646,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 8 figures included

Scientific paper

10.1007/s002880050286

The high energy photoproduction of jets is being observed at the ep collider, HERA. It may be that the HERA centre-of-mass energy is sufficiently large that the production of more than one pair of jets per ep collision becomes possible, owing to the large number density of the probed gluons. We construct a Monte Carlo model of such multiparton interactions and study their effects on a wide range of physical observables. The conclusion is that multiple interactions could have very significant effects upon the photoproduction final state and that this would for example make extractions of the gluon density in the photon rather difficult. Total rates for the production of many (i.e. > 2) jets could provide direct evidence for the presence of multiple interactions, although parton showering and hadronization significantly affect low transverse energy jets.

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