Multijet cross sections in charged current e±p scattering at HERA

Le résumé fourni par la source

Jet cross sections were measured in charged-current deep inelastic ${e}^{\ifmmode\pm\else\textpm\fi{}}p$ scattering at high boson virtualities ${Q}^{2}$ with the ZEUS detector at HERA II using an integrated luminosity of $0.36\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. 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 ${e}^{\ifmmode\pm\else\textpm\fi{}}p$ 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.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.