Speaker
Friederike Januschek
(DESY)
Description
The cross sections for neutral current deep inelastic scattering in
e+p collisions with a longitudinally polarised positron beam have been
measured using the ZEUS detector at HERA. The single-differential
cross-sections dsigma/dQ2, dsigma/dx and dsigma/dy and the
double-differential cross sections in Q2 and x are measured in the
kinematic region Q2 > 185 GeV2 for both positively and negatively
polarised electron beams and for each polarisation state separately.
The measurements are based on an integrated luminosity of 136 pb-1
taken in 2006 and 2007 at a centre-of-mass energy of 318 GeV.
The structure functions xF_3 and xF_3^{\gammaZ} are determined
by combining the e+p results presented in this analysis
with previously measured e-p neutral current data.
The measured cross sections are compared to the predictions.
Author
Olaf Behnke
(DESY)
