Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production

Abstract

I present the resummation of collinear and soft gluon corrections to single top quark production in the t channel at next-to-next-to-leading logarithm (NNLL) accuracy using two-loop soft anomalous dimensions. The expansion of the resummed cross section yields approximate next-to-next-to-leading order (NNLO) cross sections. Numerical results for t-channel single top quark (or single antitop) production at the Tevatron and the LHC are presented, including the dependence of the cross sections on the top quark mass, and the uncertainties from scale variation and parton distributions. Combined results for all single top quark production channels are also given.

11 pages, 4 figures

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• Higher-order soft gluon corrections in single top quark production at the LHC
• Single top quark production and decay in the t-channel at next-to-leading order at the LHC
• Off-shell effects for t-channel and s-channel single-top production at NLO in QCD
• Factorization and resummation of s-channel single top quark production
• Observation of Single Top Quark Production at the Tevatron Collider
• Factorization and resummation of t-channel single top quark production
• Two-loop soft anomalous dimensions with massive and massless quarks

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