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Supersymmetric QCD one-loop effects in (un)polarized top-pair production at hadron colliders

Stefan Berge1,*, Wolfgang Hollik2,†, Wolf M. Mosle3,‡, and Doreen Wackeroth4,§

  • 1Institut für Theoretische Physik, RWTH Aachen, D-52056 Aachen, Germany
  • 2Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, D-80805 Munich, Germany
  • 3Paul Scherrer Institut, Würenlingen und Villigen, CH-5232 Villigen PSI, Switzerland
  • 4Department of Physics, SUNY at Buffalo, Buffalo, New York 14260-1500, USA

  • *berge@physik.rwth-aachen.de
  • †hollik@mppmu.mpg.de
  • ‡Now at MicroStrategy, Inc.
  • §dow@ubpheno.physics.buffalo.edu
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Phys. Rev. D 76, 034016 – Published 27 August, 2007

DOI: https://doi.org/10.1103/PhysRevD.76.034016

Abstract

We study the effects of O(αs) supersymmetric QCD (SQCD) corrections on the total production rate and kinematic distributions of polarized and unpolarized top-pair production in pp and pp¯ collisions. At the Fermilab Tevatron pp¯ collider, top-quark pairs are mainly produced via quark-antiquark annihilation, qq¯→tt¯, while at the CERN LHC pp collider gluon-gluon scattering, gg→tt¯, dominates. We compute the complete set of O(αs) SQCD corrections to both production channels and study their dependence on the parameters of the minimal supersymmetric standard model. In particular, we discuss the prospects for observing strong, loop-induced SUSY effects in top-pair production at the Tevatron run II and the LHC.

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Phys. Rev. D 76, 034016– Published 27 August, 2007
  • Received 23 March 2007

© 2007 American Physical Society

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