Jet cross sections were measured in charged-current deep inelastic e±p scattering at high boson virtualities Q2 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 Q2, 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.

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

COSTA, Marco;MONACO, Vincenzo;SACCHI, Roberto;SOLANO, Ada Maria;
2008-01-01

Abstract

Jet cross sections were measured in charged-current deep inelastic e±p scattering at high boson virtualities Q2 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 Q2, 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.
2008
78
032004
-
http://link.aps.org/abstract/PRD/v78/e032004
High Energy Physics; HERA; ZEUS Collaboration; Deep Inelastic Scattering; Color dipole model; PARTON DISTRIBUTIONS; HADRON-COLLISIONS; JET FRAGMENTATION; DIJET PRODUCTION
S. Chekanov;M. Derrick;S. Magill;B. Musgrave;D. Nicholass;J. Repond;R. Yoshida;M. C. K.;M. Jechow;N. Pavel;P. Antonioli;G. Bari;L. Bellagamba;D. Bosch...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/112011
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