A comprehensive approach to new physics simulations

TL;DR

This paper presents a flexible framework using FeynRules to develop, implement, and validate various new physics models for particle physics simulations, enhancing theoretical and experimental research capabilities.

Contribution

It introduces a comprehensive approach leveraging FeynRules for seamless model implementation across multiple Monte Carlo generators, demonstrated with diverse new physics models.

Findings

Validated implementation of multiple new physics models

Demonstrated robustness across different simulation tools

Enhanced efficiency in model development and testing

Abstract

We describe a framework to develop, implement and validate any perturbative Lagrangian-based particle physics model for further theoretical, phenomenological and experimental studies. The starting point is FeynRules, a Mathematica package that allows to generate Feynman rules for any Lagrangian and then, through dedicated interfaces, automatically pass the corresponding relevant information to any supported Monte Carlo event generator. We prove the power, robustness and flexibility of this approach by presenting a few examples of new physics models (the Hidden Abelian Higgs Model, the general Two-Higgs-Doublet Model, the most general Minimal Supersymmetric Standard Model, the Minimal Higgsless Model, Universal and Large Extra Dimensions, and QCD-inspired effective Lagrangians) and their implementation/validation in FeynArts/FormCalc, CalcHep, MadGraph/MadEvent, and Sherpa.