# Europhysics Conference on High-Energy Physics 2011

20-27 July 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

## High Q2 Neutral and Charged Current in polarised collisions at HERA II with H1

21 Jul 2011, 14:30
15m
Bayard (Alpes Congrès - Alpexpo)

### Bayard

#### Alpes Congrès - Alpexpo

Parallel session talk

Shiraz Habib

### Description

The inclusive single differential cross section $d\sigma/dQ2$ and the reduced double differential cross section $\tilde{\sigma}(x,Q2)$ are presented for neutral and charged current processes, $e^{\pm}p \rightarrow \nu X$, 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 $Q2 \geq 200$ GeV$^2$ and inelasticity $y<0.9$. Together with the corresponding cross section obtained from the previously published unpolarised data, the polarisation dependence of the charged current cross section is measured and found to be in agreement with the Standard Model prediction. The neutral current data are consistent with the expected $Q2$ dependence of polarised cross sections. The data are compared to predictions of the Standard Model which is able to provide a good description of the data.

### Primary author

Dr Katja KRUEGER (KIP, Heidelberg University, H1 Collaboration)

 Slides