Multi-jet cross sections in charged current e+-p scattering at HERA

Details Multi-jet cross sections in charged current e+-p scattering at HERA Multi-jet cross sections in charged current e+-p scattering at HERA

2008-02-27

arxiv.org/abs/0802.3955v2

Phys.Rev.D78:032004,2008

Physics

High Energy Physics

High Energy Physics - Experiment

55 pages, 15 figures, 16 tables

Scientific paper

10.1103/PhysRevD.78.032004

Jet cross sections were measured in charged current deep inelastic e+-p scattering at high boson virtualities Q^2 with the ZEUS detector at HERA II using an integrated luminosity of 0.36 fb^-1. Differential cross sections are presented for inclusive-jet production as functions of Q^2, Bjorken x and the jet transverse energy and pseudorapidity. The dijet invariant mass cross section is also presented. Observation of three- and four-jet events in charged-current e+-p processes is reported for the first time. The predictions of next-to-leading-order (NLO) QCD calculations are compared to the measurements. The measured inclusive-jet cross sections are well described in shape and normalization by the NLO predictions. The data have the potential to constrain the u and d valence quark distributions in the proton if included as input to global fits.

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