Measurement of high-Q e-p neutral current cross sections at HERA and the extraction of xF3

  • The ZEUS Collaboration
  • S. Chekanov et al.
Experimental Physics

Abstract.

Cross sections for e-p neutral current deep inelastic scattering have been measured at a centre-of-mass energy of 318 GeV using an integrated luminosity of 15.9 pb-1 collected with the ZEUS detector at HERA. Results on the double-differential cross-section \(d^2\sigma / dx dQ^2\) in the range 185 < Q2 < 50 000 GeV2 and 0.0037 < x < 0.75, as well as the single-differential cross-sections \(d\sigma / dQ^2\), \(d\sigma / dx\) and \(d\sigma / dy\) for Q2 > 200 GeV2, are presented. To study the effect of Z-boson exchange, \(d\sigma / dx\) has also been measured for Q2 > 10 000 GeV2. The structure function xF3 has been extracted by combining the e-p results presented here with the recent ZEUS measurements of e+p neutral current deep inelastic scattering. All results agree well with the predictions of the Standard Model.

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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2003

Authors and Affiliations

  • The ZEUS Collaboration
  • S. Chekanov et al.
    • 1
  1. 1.Argonne National Laboratory, Argonne, Illinois 60439-4815, USA US

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