Multiparticle SUSY simulations at LHC & ILC: Off-Shell effects, interferences and radiative corrections

The interesting but difficult phenomenology of supersymmetric models at the LHC and ILC demands a corresponding complexity and maturity from simulation tools. This includes multiparticle final states, reducible and irreducible backgrounds, spin correlations, real emission of photons and gluons, virtual corrections etc. Most of these topics are included in the multi-particle Monte Carlo (MC) Event generators Madgraph, WHIZARD and Sherpa. A comparison of these codes is shown, with a special focus on the new release of WHIZARD. I show examples for the necessity of considering full matrix elements with all off-shell effects and interferences for multiparticle final states in supersymmetric models and give a status report on ongoing projects for simulations of SUSY processes at the LHC with these codes, including all of the abovementioned corrections. PACS. 11.30.Pb Supersymmetry – 12.38.Bx Perturbative Calculations – 12.60.Jv Supersymmetric models 1 The need for multi-particle event