### Top-quark pair-production with one jet and parton showering at hadron colliders.

Simone Alioli, Juan Fuster, Adrian Irles, Sven-Olaf Moch, Peter Uwer & Marcel Vos
We present heavy-flavor production in association with one jet in hadronic collisions matched to parton shower Monte Carlo predictions at next-to-leading order QCD with account of top-quark decays and spin correlations. We use the \POWHEGBOX{} for the interface to the parton shower programs \PYTHIA{} or \HERWIG{}. Phenomenological studies for the LHC and the Tevatron are presented with particular emphasis on the inclusion of spin-correlation effects in top decay and the impact of the parton shower...