Speaker
Christian Weiss
(DESY)
Description
WHIZARD is a multi-purpose event generator for hadron- and lepton-colliders, featuring support for various models. A distinct feature is the description of beamstrahlung and ISR for lepton collisions. Up to now, the program has been able to automatically perform leading-order calculations, contributions of higher virtual orders being only available for some specific kinds of processes. Since many applications require at least next-to-leading order accuracy, this issue has been adressed by us. We present the current state of WHIZARD which can also deal with NLO QCD final-state corrections, using the Frixione-Kunszt-Signer subtraction scheme. For loop amplitudes, either the program GoSam or OpenLoops can be used. In this talk, the setup of the program is briefly explained. Moreover, results for various processes, e.g. $e^+ e^- \rightarrow t\bar{t}H$ or $e^+ e^- \rightarrow W^+ W^- b \bar{b}$, are presented.
Author
Christian Weiss
(DESY)
