2018 Impact factor 4.843
Particles and Fields

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)

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 ${\rm pb}^{-1}$. The data are compared with recent measurements of the inclusive neutral and charged current e+ p cross sections. For Q2> 1 000 ${\rm GeV}^2$ clear evidence is observed for an asymmetry between e+p and e-p neutral current scattering and the generalised structure function $x{\tilde{F}_3}$ 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