Electroweak Radiative Corrections to Single-top Production

Abstract

Radiative corrections to the single top s and t channel production processes are revisited. Complete one-loop electroweak corrections are calculated within the SANC system. New is a study of the regularisation of the top-legs associated infrared divergences with aid of the complex mass of the top quark. A comparison of these electroweak corrections with those computed by the conventional method is presented both for top production and decays. Standard FORM and FORTRAN SANC modules are created. These modules are compiled into a package sanc_cc_v1.40, which may be downloaded from SANC project homepages. Many numerical results are presented at the partonic level with the aim to demonstrate the correct working of modules. These modules are intended to be used in Monte Carlo generators for single top production at the LHC. Where possible, we compare our results with those existing in the literature; in particular, a comprehensive comparison with results of the CompHEP system is given.

21 pages, 12 figures, 23 tables

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• Single top-quark production with SHERPA
• The Single Top Quark Physics
• Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature
• Single Top Production in PDF fits
• MINLO t-channel single-top plus jet
• Standard SANC modules for NLO QCD Radiative Corrections to Single-top Production