NNLL resummation for s-channel single top quark production

Abstract

I present the next-to-next-to-leading-logarithm (NNLL) resummation of soft and collinear gluon corrections to single top quark production in the s channel. Attaining NNLL accuracy involves the calculation of the two-loop soft anomalous dimension for the partonic subprocesses. Finite-order expansions of the resummed cross section are calculated through next-to-next-to-leading order (NNLO). Numerical results are presented for s-channel single top quark production at the Tevatron and the LHC, including the dependence of the cross sections on the top quark mass and the uncertainties in the theoretical prediction. The higher-order corrections are significant for energies at both colliders and they decrease the theoretical uncertainty.

17 pages, 12 figures; added figures and discussion

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Cited by in corpus (11)

• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution
• Observation of Single Top Quark Production and Measurement of |Vtb| with CDF
• The top quark rapidity distribution and forward-backward asymmetry
• Single top quark production and decay in the t-channel at next-to-leading order at the LHC
• Computation of the Soft Anomalous Dimension Matrix in Coordinate Space
• Off-shell effects for t-channel and s-channel single-top production at NLO in QCD
• QCD correction to single top quark production at the ILC
• Renormalization group evolution of collinear and infrared divergences
• Two-loop resummation for QCD hard scattering