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

TL;DR

This paper discusses advanced simulation techniques for supersymmetric models at the LHC and ILC, emphasizing the importance of including off-shell effects, interferences, and radiative corrections for accurate predictions.

Contribution

It provides a comparison of multi-particle Monte Carlo generators and highlights the necessity of full matrix element calculations with off-shell effects in SUSY simulations.

Findings

Comparison of Madgraph, WHIZARD, and Sherpa simulation tools.

Demonstration of the importance of off-shell effects and interferences.

Status report on SUSY process simulations at LHC.

Abstract

The interesting but difficult phenomenology of supersymmetric models at the LHC and ILC demands a corresponding complexity and maturity from simulation tools. This includes multi-particle 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 multi-particle 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.