Measurement of high-Q^2 charged current deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA

Understand

Measurements of the cross sections for charged current deep inelastic scattering in e+p collisions with a longitudinally polarised positron beam are presented.

• The measurements are based on a data sample with an integrated luminosity of 132 pb^-1 collected with the ZEUS detector at HERA at a centre-of-mass energy of 318 GeV.
• The total cross section is presented at positive and negative values of the longitudinal polarisation of the positron beams.
• The single-differential cross-sections ds/dQ^2, ds/dx and ds/dy are presented for Q^2 > 200 GeV^2.