We present results for the production of a top pair in association with a W-boson at next-to-leading order. We have implemented this process into the parton-level integrator MCFM including the decays of both the top quarks and the W-bosons with full spin correlations. Although the cross section for this process is small, it is a Standard Model source of same-sign lepton events that must be accounted for in many new physics searches. For a particular analysis of same-sign lepton events in which b-quarks are also present, we investigate the effect of the NLO corrections as a function of the signal region cuts.
@article{arxiv.1204.5678,
title = {t \bar{t} W production and decay at NLO},
author = {John M. Campbell and R. Keith Ellis},
journal= {arXiv preprint arXiv:1204.5678},
year = {2015}
}