Three-Jet Production in Deep-Inelastic Scattering at HERA

Abstract

Three-jet production is studied for the first time in deep-inelastic positron-proton scattering. The measurement carried out with the H1 detector at HERA covers a large range of four-momentum transfer squared 5 < Q^2 < 5000 GeV^2 and invariant three-jet masses 25 < M_(3jet) < 140 GeV. Jets are defined by the inclusive k_T algorithm in the Breit frame. The size of the three-jet cross section and the ratio of the three-jet to the dijet cross section R_(3/2) are described over the whole phase space by the predictions of perturbative QCD in next-to-leading order. The shapes of angular jet distributions deviate significantly from a uniform population of the available phase space but are well described by the QCD calculation.

17 pages, 5 figures, 1 table

References in corpus (11)

• Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
• Determination of the QCD Coupling ${\alpha }_s$
• Measurement and QCD Analysis of Jet Cross Sections in Deep-Inelastic Positron-Proton Collisions at sqrt(s) of 300 GeV
• Measurement of Internal Jet Structure in Dijet Production in Deep-Inelastic Scattering at HERA
• Measurement of dijet production in neutral current deep inelastic scattering at high Q**2 and determination of alpha_s
• Measurement of Three-jet Distributions in Photoproduction at HERA
• Dijet Production in Charged and Neutral Current e^+p Interactions at High Q^2
• Ratios of Multijet Cross Sections in p-pbar Collisions at sqrt(s)=1.8 TeV
• Di-jet Event Rates in Deep-Inelastic Scattering at HERA
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Cited by in corpus (26)

• Automating the POWHEG method in Sherpa
• The Hadronic Final State at HERA
• Collider Physics at HERA
• Hadronic final states in deep-inelastic scattering with Sherpa
• Inclusive-jet photoproduction at HERA and determination of alphas
• Induced gravity with a non-minimally coupled scalar field on the brane
• QCD uncertainties at the LHC and the implications of HERA
• Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA
• Measurement of Inclusive Jet Cross-Sections in Deep-Inelastic ep Scattering at HERA
• Inclusive Dijet Production at Low Bjorken-x in Deep Inelastic Scattering
• Inclusive-jet cross sections in NC DIS at HERA and a comparison of the kT, anti-kT and SIScone jet algorithms
• Substructure dependence of jet cross sections at HERA and determination of alphas
• Forward jet production in deep inelastic ep scattering and low-x parton dynamics at HERA
• Multijet production in neutral current deep inelastic scattering at HERA and determination of alpha_s
• Three- and four-jet final states in photoproduction at HERA
• Multijet production at low $x_{\mathrm{Bj}}$ in deep inelastic scattering at HERA
• Three-jet event-shapes in lepton-proton scattering at next-to-leading order accuracy
• Search for Excited Electrons at HERA
• Search for Excited Neutrinos at HERA
• Measurement of the ratio of three-jet to two-jet cross sections in pp-bar collisions at sqrt(s) = 1.96 TeV
• Subjet distributions in deep inelastic scattering at HERA
• Measurement of jet production in deep inelastic scattering and NNLO determination of the strong coupling at ZEUS
• Three- and Four-jet Production at Low x at HERA
• Angular correlations in three-jet events in ep collisions at HERA
• QCD at High Energy
• Jets in Deep Inelastic Scattering and High Energy Photoproduction at HERA