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

Abstract

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.

55 pages, 15 figures, 16 tables

References in corpus (29)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• HERWIG 6.5: an event generator for Hadron Emission Reactions With Interfering Gluons (including supersymmetric processes)
• High-Energy-Physics Event Generation with PYTHIA 6.1
• A General Algorithm for Calculating Jet Cross Sections in NLO QCD
• Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
• Successive Combination Jet Algorithm For Hadron Collisions
• Inclusive Jet Production, Parton Distributions, and the Search for New Physics
• Uncertainties of predictions from parton distributions. I: experimental errors
• LEPTO 6.5 - A Monte Carlo Generator for Deep Inelastic Lepton-Nucleon Scattering
• A ZEUS next-to-leading-order QCD analysis of data on deep inelastic scattering
• Experimental Tests of Asymptotic Freedom
• An NLO QCD analysis of inclusive cross-section and jet-production data from the ZEUS experiment
• Inclusive jet cross sections in the Breit frame in neutral current deep inelastic scattering at HERA and determination of alpha_s
• The Longitudinal Polarimeter at HERA
• Dijet Production at HERA in Next-to-Leading Order
• The design and performance of the ZEUS Micro Vertex detector
• The Spectrometer System for Measuring ZEUS Luminosity at HERA
• Measurement of High-Q^2 Charged-Current e^+p Deep Inelastic Scattering Cross Sections at HERA
• Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of ${\alpha }_s$
• Measurement of Charged and Neutral Current $e^{-}p$ Deep Inelastic Scattering Cross Sections at High $Q^2$
• Measurement of the $Q^2$ dependence of the Charged and Neutral Current Cross Sections in $e^{\pm }p$ Scattering at HERA
• First Measurement of Charged Current Cross Sections at HERA with Longitudinally Polarised Positrons
• Measurement of Jet Shapes in High-Q**2 Deep Inelastic Scattering at HERA
• Jet production in charged current deep inelastic e+p scattering at HERA
• Measurement of the $e^{+}$ and $e^{-}$ induced charged current cross sections at HERA
• Dijet Production in Charged and Neutral Current e^+p Interactions at High Q^2
• Study of Charged-Current ep Interactions at Q2 > 200 GeV2 with the ZEUS Detector at HERA

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