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A measurement of the excess of positive leading particles in deep inelastic events at HERA |
| Reference |
Preliminary results expected for ICHEP2004, Summer 2004 |
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| Contact |
B Delcourt |
| Abstract |
In deep inelastic scattering mediated by neutral currents, leading particles are expected on average to be slightly more positive than negative, owing to the presence of valence quarks in the proton. Measurements of this excess, as a function of x and Q2, are presented and compared with predictions from various QCD models. The excess in charged current events, where the effect is larger but the statistics smaller, is also presented. |
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