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High Q2 Neutral Current in polarised ep collisions at HERA II |
| Reference |
Preliminary results expected for ICHEP 2008, |
| Figures |
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| Contact |
Analysis webpage |
| Abstract |
The inclusive single differential cross section $d\sigma/dQ^2$ and
the reduced double differential cross section
$ ilde{\sigma}(x,Q^2)$ are presented for the neutral current process,
$e^{\pm}p
ightarrow e^{\pm} X$, in interactions with longitudinally
polarised lepton beams using the complete HERA-II data set. The cross
sections are measured in the region of large negative four-momentum
transfer squared $Q^2 \geq 200$ GeV$^2$ and inelasticity
$y<0.9$. The data are consistent with the expected $Q^2$ dependence of
polarised cross sections, albeit with the limited statistical
precision of the data. The reduced cross section data are combined
together with previously published unpolarised data to determine the
structure function $x ilde{F}_3$ with improved precision. The data
are compared to predictions of the Standard Model which is able to
provide a good description of the data. |
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