Eur. Phys. J. C 19, 269-288
Measurement of neutral and charged current cross sections in electron-proton collisions at high Q2The H1 Collaboration C. Adloff and et al.
Fachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal, Germany
(Received: 21 December 2000 / Published online: 15 March 2001 -© Springer-Verlag 2001)
The inclusive e- p single and double differential cross sections for neutral and charged current processes are measured with the H1 detector at HERA, in the range of four-momentum transfer squared Q2 between 150 and 30 000 GeV2, and Bjorken x between 0.002 and 0.65. The data were taken in 1998 and 1999 with a centre-of-mass energy of 320 GeV and correspond to an integrated luminosity of 16.4 . The data are compared with recent measurements of the inclusive neutral and charged current e+ p cross sections. For Q2> 1 000 clear evidence is observed for an asymmetry between e+p and e-p neutral current scattering and the generalised structure function is extracted for the first time at HERA. A fit to the charged current data is used to extract a value for the W boson propagator mass. The data are found to be in good agreement with Standard Model predictions.
© Società Italiana di Fisica, Springer-Verlag 2001