EPJ

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EPJ C - Particles and Fields
Particles and Fields
\n This email address is being protected from spambots. You need JavaScript enabled to view it. ), CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> Eur. Phys. J. C 13, 609-639
DOI 10.1007/s100520000316

Measurement of neutral and charged current cross-sections in positron-proton collisions at large momentum transfer

The H1 Collaboration

C. Adloff33 - et al.

33 Fachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, Germanya

Received: 27 August 1999 / Published online: 25 February 2000 - © Springer-Verlag 2000

Abstract
The inclusive single and double differential cross-sections for neutral and charged current processes with four-momentum transfer squared Q2 between 150 and $30\,000\,{\rm GeV}^2$ and with Bjorken xbetween 0.0032 and 0.65 are measured in e+ p collisions. The data were taken with the H1 detector at HERA between 1994 and 1997, and they correspond to an integrated luminosity of $35.6\,{\rm pb}^{-1}$. The Q2 evolution of the parton densities of the proton is tested, yielding no significant deviation from the prediction of perturbative QCD. The proton structure function F2(x,Q2) is determined. An extraction of the u and d quark distributions at high x is presented. At high Q2 electroweak effects of the heavy bosons $Z^\circ$ and W are observed and found to be consistent with Standard Model expectation.

Copyright Società Italiana di Fisica, Springer-Verlag 2000

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