We present a calculation of O(\alpha_s) contributions to the process of t-channel single-top production and decay, which include virtual and real corrections arising from interference of the production and decay subprocesses. The calculation is organized as a simultaneous expansion of the matrix elements in the couplings \alpha_{ew},\alpha_s and the virtuality of the intermediate top quark, (p_t^2-m_t^2)/m_t^2 ~ \Gamma_t/m_t, and extends earlier results beyond the narrow-width approximation.
@article{arxiv.1007.0893,
title = {Production-decay interferences at NLO in QCD for t-channel single-top production},
author = {Pietro Falgari and Paul Mellor and Adrian Signer},
journal= {arXiv preprint arXiv:1007.0893},
year = {2014}
}