Article

Measurement of charged current deep inelastic scattering cross sections with a longitudinally polarised electron beam at HERA

European Physical Journal C (Impact Factor: 5.25). 01/2009; 61(2):223-235. DOI: 10.1140/epjc/s10052-009-1015-1

ABSTRACT Measurements of the cross sections for charged current deep inelastic scattering in e

p collisions with longitudinally polarised electron beams are presented. The measurements are based on a data sample with an
integrated luminosity of 175 pb−1 collected with the ZEUS detector at HERA at a centre-of-mass energy of 318GeV. The total cross section is given for positively
and negatively polarised electron beams. The differential cross-sections d
σ/dQ
2, d
σ/dx and d
σ/dy are presented for Q
2>200 GeV2. The double-differential cross-section d
2
σ/dxdQ
2 is presented in the kinematic range 280<Q
2<30 000 GeV2 and 0.015<x<0.65. The measured cross sections are compared with the predictions of the Standard Model.

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