Inclusive-jet and dijet cross-sections in deep inelastic scattering at HERA

Inclusive-jet and dijet differential cross sections have been measured in neutral current deep inelastic ep scattering for exchanged boson virtualities Q 2 > 125 GeV 2 with the ZEUS detector at HERA using an integrated luminosity of 82 pb −1 . Jets were identified in the Breit frame using the k T cluster algorithm. Jet cross sections are presented as functions of several kinematic and jet variables. The results are also presented in different regions of Q 2 . Next-to-leading-order QCD calculations describe the measurements well. Regions of phase space where the theoretical uncertainties are small have been identified. Measurements in these regions have the potential to constrain the gluon density in the proton when used as inputs to global fits of the proton parton distribution functions.

Note:

31 pages, 12 figures, revised version with small modifications to the text, accepted by Nuclear Physics B

electron p: colliding beams
electron p: deep inelastic scattering
neutral current
jet: electroproduction
jet: pair production
kinematics: Breit frame
track data analysis: cluster
differential cross section: momentum transfer
x-dependence
rapidity dependence

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