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

  • The H1 Collaboration
  • C. Adloff et al.
Experimental physics

Abstract.

The inclusive single and double differential cross-sections for neutral and charged current processes with four-momentum transfer squared \(Q^2\) between 150 and 30 000 GeV\(^2\) and with Bjorken x between 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 \(Q^2\) evolution of the parton densities of the proton is tested, yielding no significant deviation from the prediction of perturbative QCD. The proton structure function \(F_2(x,Q^2)\) is determined. An extraction of the u and d quark distributions at high x is presented. At high \(Q^2\) electroweak effects of the heavy bosons \(Z^\circ\) and \(W\) are observed and found to be consistent with Standard Model expectation.

Keywords

Structure Function Momentum Transfer Current Process Large Momentum Parton Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • The H1 Collaboration
  • C. Adloff et al.
    • 1
  1. 1.Fachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, Germany DE

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