Top Physics in WHIZARD
  In this talk we summarize the top physics setup in the event generator WHIZARD with a main focus on lepton colliders. This includes full six-, eight- and ten-fermion processes, factorized processes and spin correlations. For lepton colliders, QCD NLO processes for top quark physics are available and will be discussed. A special focus is on the top-quark pair threshold, where a special implementation combines a non-relativistic effective field theory calculation augmented by a next-to-leading threshold logarithm resummation with a continuum relativistic fixed-order QCD NLO simulation. 
J. Reuter, F. Bach, B. Chokoufe, A. Hoang, W. Kilian, M. Stahlhofen,   T. Teubner, C. Weiss
hep-ph hep-ex