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arxiv: 1204.5678 · v1 · submitted 2012-04-25 · ✦ hep-ph

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t bar{t} W production and decay at NLO

John M. Campbell , R. Keith Ellis
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classification ✦ hep-ph
keywords eventsleptonprocessproductionsame-signaccountedalthoughanalysis
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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.

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