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Dijet photoproduction at HERA and the structure of the photon
Journal article   Peer reviewed

Dijet photoproduction at HERA and the structure of the photon

ZEUS Collaboration and J Repond
The European physical journal. C, Particles and fields, Vol.23(4), pp.615-631
04/01/2002
DOI: 10.1007/s100520200936
url
https://arxiv.org/pdf/hep-ex/0112029View
Open Access

Abstract

The dijet cross section in photoproduction ha's been measured with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb(-1). The events were required to have a virtuality of the incoming photon, Q(2), of less than 1 GeV2 and a photon-proton centre-of-mass energy in the range 131 < W-yp < 277 GeV. Each event contains at least two jets satisfying transverse-energy requirements of E-T(jet1) > 14 GeV and E-T(jet2) > 11 GeV and pseudorapidity requirements of -1 < eta(jet1,2) < 2.4. The measurements arc compared to next-to-loading-order QCD predictions. The data show particular sensitivity to the density of partons in the photon, allowing the validity of the current parameterisations to be tested.
Physical Sciences Physics Physics, Particles & Fields Science & Technology

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