(eng)
Inclusive-jet and dijet differential cross sections have been measured in
neutral current deep inelastic ep scattering for exchanged boson virtualities
Q2 > 125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of
82 pb-1. Jets were identified in the Breit frame using the kt cluster
algorithm. Jet cross sections are presented as functions of several kinematic
and jet variables. The results are also presented in different regions of Q2.
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.
Comment: 31 pages, 12 figures, revised version with small modifications to the
text, accepted by Nuclear Physics B
Piotrzkowski, Krzysztof ; Chekanov, S. ; de Favereau, J. ; et. al. Inclusive-jet and dijet cross-sections in deep inelastic scattering at HERA. In: Nuclear Physics, Section B, Vol. 765, no. 1-2, p. 1-30 (2007)
