SmeftFR -- Feynman rules generator for the Standard Model Effective Field Theory

Understand

We present SmeftFR, a Mathematica package designed to generate the Feynman rules for the Standard Model Effective Field Theory (SMEFT) including the complete set of gauge invariant operators up to dimension~6.

• Feynman rules are generated with the use of FeynRules package, directly in the physical (mass eigenstates) basis for all fields.
• The complete set of interaction vertices can be derived including all or any chosen subset of SMEFT operators.
• As an option, the user can also choose preferred gauge fixing, generating Feynman rules in unitary or $R_\xi$-gauges (the latter include generation of ghost vertices).