In this work we present a calculation of both t-channel and s-channel single-top production at next-to-leading order in QCD for the Tevatron and for the LHC at a centre-of-mass energy of 7 TeV. All the cross sections and kinematical distributions presented include leading non-factorizable corrections arising from interferences of the production and decay subprocesses, extending previous results beyond the narrow-width approximation. The new off-shell effects are found to be generally small, but can be sizeable close to kinematical end-points and for specific distributions.
@article{arxiv.1102.5267,
title = {Off-shell effects for t-channel and s-channel single-top production at NLO in QCD},
author = {P. Falgari and F. Giannuzzi and P. Mellor and A. Signer},
journal= {arXiv preprint arXiv:1102.5267},
year = {2011}
}