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Multiparton interactions in photoproduction at HERA

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Zeitschrift für Physik C: Particles and Fields

Abstract

The high energy photoproduction of jets is being observed at theep 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 perep 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.≥3) 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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Authors and Affiliations

  1. University College London, Gower St., WC1E 6BT, London, UK

    J. M. Butterworth

  2. University of Manchester, Oxford Rd., M13 9PL, Manchester, UK

    J. R. Forshaw

  3. TH Division, CERN, CH-1211, Genève 23, Switzerland

    M. H. Seymour

Authors
  1. J. M. Butterworth
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  2. J. R. Forshaw
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  3. M. H. Seymour
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Butterworth, J.M., Forshaw, J.R. & Seymour, M.H. Multiparton interactions in photoproduction at HERA. Z. Phys. C - Particles and Fields 72, 637–646 (1996). https://doi.org/10.1007/s002880050286

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  • DOI: https://doi.org/10.1007/s002880050286

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