Speakers
Allen Caldwell
(Max Planck Institute)
Allen Christopher Caldwell
(Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) (D)
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 xF3 and xF3{γZ} 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
Aharon Levy
(Tel Aviv University (IL))
