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
The inclusive single and double differential cross-sections for neutral and charged current processes with four-momentum transfer squared Q2 between 150 and 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 . 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 and W are observed and found to be consistent with Standard Model expectation.
Copyright Società Italiana di Fisica, Springer-Verlag 2000