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Remarkable virtual supersymmetric effects in W± production at high energy hadron colliders

G. J. Gounaris1, J. Layssac2, and F. M. Renard2

  • 1Department of Theoretical Physics, Aristotle University of Thessaloniki, Gr-54124, Thessaloniki, Greece
  • 2Laboratoire de Physique Théorique et Astroparticules, UMR 5207, Université Montpellier II, F-34095 Montpellier Cedex 5, France

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Phys. Rev. D 77, 013003 – Published 11 January, 2008

DOI: https://doi.org/10.1103/PhysRevD.77.013003

Abstract

We present a complete 1-loop study of the electroweak corrections to the process ug→dW+ in the minimal supersymmetric standard model and the standard model. The occurrence of a number of remarkable properties in the behavior of the helicity amplitudes at high energies is stressed, and the crucial role of the virtual supersymmetric (SUSY) contributions in establishing them is emphasized. The approach to asymptopia of these amplitudes is discussed, comparing the effects of the logarithmic and constant contributions to the mass-suppressed ones, which are relevant at lower energies. Applying crossing to ug→dW+, we obtain all subprocesses needed for the 1-loop electroweak corrections to W±-production at LHC. The SUSY model dependence of such a production is then studied, and illustrations are given for the transverse W± momentum distribution, as well as the angular distribution in the subprocess center of mass.

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Phys. Rev. D 77, 013003– Published 11 January, 2008
  • Received 12 September 2007

© 2008 American Physical Society

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