Measurement of dijet cross sections in photoproduction at HERA

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Colleges, School and Institutes


Dijet cross sections as functions of several jet observables are measured in photoproduction using the HI detector at HERA. The data sample comprises e(+)p data with an integrated luminosity of 319 pb(-1). Jets are selected using the inclusive k(perpendicular to) algorithm with a minimum transverse energy of 25 GeV for the leading jet. The phase space covers longitudinal proton momentum fraction x(p) and photon longitudinal momentum fraction x(gamma) in the ranges 0.05 <x(p) <0.6 and 0.1 <x(gamma) <1. The predict ions of next-to-leading order perturbative QCD, including recent photon and proton parton densities, are found to be compatible with the data in a wide kinematical range.


Original languageEnglish
Pages (from-to)13-23
Number of pages11
JournalEuropean Physical Journal C
Issue number1
Publication statusPublished - 1 Sep 2002