Measurement of high-Q2 charged current deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA
(2010) European Physical Journal C. Particles and Fields — Vol. 70, n° 4, p. 945-963 (2010)
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- Measurements of the cross sections for charged current deep inelastic scattering in e<sup>+</sup>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<sup>-1</sup> 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 dσ/dQ<sup>2</sup>, dσ/dx and dσ/dy are presented for Q<sup>2</sup>>200 GeV<sup>2</sup>. The reduced cross-section σ̃ is presented in the kinematic range 200<Q<sup>2</sup><60000 GeV<sup>2</sup> and 0.006<x<0.562. The measurements agree well with the predictions of the Standard Model. The results are used to determine a lower limit on the mass of a hypothetical right-handed W boson. © 2010 The Author(s).
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Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartsch, D., Basile, M., et al. (2010). Measurement of high-Q2 charged current deep inelastic scattering cross sections with a longitudinally polarised positron beam at HERA. European Physical Journal C. Particles and Fields, 70(4), 945-963. https://doi.org/10.1140/epjc/s10052-010-1498-9 (Original work published 2010)