H1prelim-01-132

Measurement of single inclusive high E_T jet cross-sections in photoproduction at HERA

Reference S Caron, presented at EPS 2001, July 2001
Document Conference paper
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Contact Bernard Andrieu
Abstract Inclusive jet cross-sections for the reaction e^+ p --> jet + X for Q^2 < 1 GeV^2 and photon-proton energies in the interval 95 < W < 285 GeV have been measured using data collected in the years 1996 - 1997 with the H1 detector at HERA. Jets with transverse energies E_T_jet > 21 GeV in the pseudorapidity range -1 < eta_jet < 2.5 are searched for using the inclusive k_T cluster algorithm in the laboratory frame. Single-differential and multi-differential cross-sections as a function of eta_jet and E_T_jet are compared with NLO QCD calculations using different sets of photon parton density functions as input. The cross-sections are in good agreement with NLO QCD up to the highest measured values of E_T_jet = 75 GeV.
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