Parton shower effects in ttW production at NLO QCD
Abstract
We present a selection of results from our recent study of pp ttW production matched to partons showers at NLO QCD at the LHC. Theoretical predictions are obtained at perturbative orders O(αs3α) and O(αsα3), where the different contributions are studied first separately at the inclusive level before being combined within a realistic two same-sign lepton signature. We investigate in detail uncertainties originating from missing higher-order corrections and from the parton-shower matching scheme employed.
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