DOI: 10.1140/epjc/s2003-01163-y
Measurement of high- Q2 e-p neutral current cross sections at HERA and the extraction of xF3
The ZEUS collaboration(Received: 2 August 2002 / Revised version: 30 January 2003 / Published online: 24 March 2003 )
Abstract
Cross sections for
e-p neutral current deep inelastic
scattering have been measured at a centre-of-mass energy of
318 GeV
using an integrated luminosity of
15.9 pb
-1 collected with the
ZEUS detector at HERA. Results on the double-differential
cross-sec tion
in the range
GeV
2 and
0.0037 < x < 0.75, as well as the single-differential
cross-sec tions
,
and
for
Q2 > 200 GeV
2, are presented. To study the effect of
Z-boson
exchange,
has also been measured for
GeV
2. The structure function
xF3 has been extracted by combining
the
e-p results presented here with the recent ZEUS measurements of
e+p neutral current deep inelastic scattering. All results agree
well with the predictions of the Standard Model.
© Società Italiana di Fisica, Springer-Verlag 2003
