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Neutral and Charged Currents at High Q2 in Collisions of Longitudinally Polarised Positrons with Protons at HERA II |
| Reference |
Preliminary results presented at Moriond QCD 2004/ DIS2004, Spring 2004 |
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| Contact |
E. Rizvi |
| Abstract |
First measurements of the neutral and charged current polarised cross
sections $d\sigma/dQ^2$ and $\sigms^{tot}_{CC}$ in positron-proton
collisions at high $Q^2$ are presented. The measurements are based on
$\simeq 15~$pb$^{-1}$ of data collected in 2003 and 2004 with
$\sqrt{s}=319$~GeV. The longitudinally polarised positron beam is
predominantly right handed leading to polarisation of $\simeq 30\%$.
The data are compared to previous measurements of high $Q^2$
unpolarised cross sections. |
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