Abstract
AbstractWhile Monte Carlo event generators like Whizard have become indispensable tools in studying the impact of new physics on collider observables over the last decades, the implementation of new models in such packages has remained a rather awkward and error-prone process. Recently, the FeynRules package was introduced which greatly simplifies this process by providing a single unified model format from which model implementations for many different Monte Carlo codes can be derived automatically. In this note, we present an interface which extends FeynRules to provide this functionality also for the Whizard package, thus making Whizard’s strengths and performance easily available to model builders.
Highlights
Monte Carlo simulations of the particle collisions to be observed at the Large Hadron Collider (LHC) will play a key role in the exploration of the weak scale, both from the theoretical and experimental sides
A framework based on the FEYNRULES package [12], addressing the implementation and the validation of new physics models in multi-purpose matrix-element and event generators has recently been proposed [13] and its virtue illustrated in the context of the programs COMPHEP/CALCHEP, MADGRAPH/MADEVENT and SHERPA
We presented the interface between FEYNRULES, a program to automatically generate Feynman rules from a generic input Lagrangian, to the multi-particle event generator WHIZARD
Summary
Monte Carlo simulations of the particle collisions to be observed at the LHC will play a key role in the exploration of the weak scale, both from the theoretical and experimental sides. Might a model contain hundreds, if not thousands, of interaction vertices which need to be encoded in a format suitable for the generator in question, but in addition, each code follows its own format conventions which need to be respected. To improve this situation, a framework based on the FEYNRULES package [12], addressing the implementation and the validation of new physics models in multi-purpose matrix-element and event generators has recently been proposed [13] and its virtue illustrated in the context of the programs COMPHEP/CALCHEP, MADGRAPH/MADEVENT and SHERPA. The Appendix contains an exhaustive list of the interface options (Appendix A) and a selection of numerical results from the interface validation (Appendix B)
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