Eur. Phys. J. C 19, 269-288
DOI: 10.1007/s100520100607
Measurement of neutral and charged current cross sections in electron-proton collisions at high Q2
The 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)
Abstract
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
