Next-to-leading order QCD corrections to $s$-channel single top quark production and decay at the LHC

Next-to-leading order QCD corrections to $s$ -channel single top quark production and decay at the LHC

Sarah Heim, Qing-Hong Cao, Reinhard Schwienhorst, and C.-P. Yuan

Phys. Rev. D 81, 034005 – Published 4 February 2010

Abstract

We present a study of electroweak production of top and antitop quarks in the $s$ -channel mode at the LHC, including next-to-leading order QCD corrections to the production and decay of the single (anti)top quark. The spin is preserved in production and decay by using the narrow width approximation for the (anti)top quark. We show the effect of different $O (α_{s})$ contributions on the inclusive cross section and various kinematic distributions at parton level after imposing relevant kinematic cuts to select $s$ -channel single top quark events. We also discuss several possibilities for measuring the top quark polarization.

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Received 4 November 2009

DOI:https://doi.org/10.1103/PhysRevD.81.034005

Authors & Affiliations

Sarah Heim^1,*, Qing-Hong Cao^2,3,†, Reinhard Schwienhorst^1,‡, and C.-P. Yuan^1,§

¹Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
²High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
³Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA

^*heimsara@msu.edu
^†caoq@hep.anl.gov
^‡schwier@pa.msu.edu
^§yuan@pa.msu.edu

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Vol. 81, Iss. 3 — 1 February 2010

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Physical Review D

covering particles, fields, gravitation, and cosmology