A superspace module for the FeynRules package

TL;DR

This paper introduces a new module for FeynRules that simplifies the construction and analysis of N=1 supersymmetric quantum field theories directly in superspace, automating many derivations.

Contribution

The paper presents a novel FeynRules module enabling easy building and automatic derivation of Feynman rules for N=1 supersymmetric models in superspace.

Findings

Automates derivation of supersymmetric Feynman rules.

Allows direct study of supersymmetric transformations in Mathematica.

Facilitates integration with Feynman diagram calculators.

Abstract

We describe an additional module for the Mathematica package FeynRules that allows for an easy building of any N=1 supersymmetric quantum field theory, directly in superspace. After the superfield content of a specific model has been implemented, the user can study the properties of the model, such as the supersymmetric transformation laws of the associated Lagrangian, directly in Mathematica. While the model dependent parts of the latter, i.e., the soft supersymmetry-breaking Lagrangian and the superpotential, have to be provided by the user, the model independent pieces, such as the gauge interaction terms, are derived automatically. Using the strengths of the Feynrules program, it is then possible to derive all the Feynman rules associated to the model and implement them in all the Feynman diagram calculators interfaced to FeynRules in a straightforward way.