Multijet cross sections in charged current e{sup {+-}}p scattering at HERA

Journal Article · Fri Aug 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.032004· OSTI ID:21250578

Chekanov, S; Derrick, M; Magill, S; Musgrave, B; Nicholass, D; Repond, J; Yoshida, R ^[1]; Mattingly, M C. K. ^[2]; Jechow, M; Pavel, N ^[3]; Antonioli, P; Bari, G; Bellagamba, L; Boscherini, D; Bruni, A; Bruni, G; Cindolo, F; Corradi, M; Iacobucci, G; Margotti, A ^[4]

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1. Argonne National Laboratory, Argonne, Illinois 60439-4815 (United States)
2. Andrews University, Berrien Springs, Michigan 49104-0380 (United States)
3. Institut fuer Physik der Humboldt-Universitaet zu Berlin, Berlin (Germany)
4. INFN Bologna, Bologna (Italy)

Jet cross sections were measured in charged-current deep inelastic e{sup {+-}}p scattering at high boson virtualities Q{sup 2} with the ZEUS detector at HERA II using an integrated luminosity of 0.36 fb{sup -1}. Differential cross sections are presented for inclusive-jet production as functions of Q{sup 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{sup {+-}}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.

• OSTI ID: 21250578
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARGED CURRENTS
DEEP INELASTIC SCATTERING
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTRON-PROTON INTERACTIONS
FORECASTING
HERA STORAGE RING
LUMINOSITY
MASS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE RAPIDITY
POSITRONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARKS
TRANSVERSE ENERGY
VALENCE