FlavorKit: a brief overview

TL;DR

FlavorKit is a versatile software toolkit that enables researchers to compute flavor observables across various models beyond the standard model, integrating analytical and numerical methods with user-defined extensions.

Contribution

It introduces a flexible, model-independent framework for calculating flavor observables using existing computational tools and custom operator definitions.

Findings

Supports a wide range of flavor observables

Allows user-defined operators and observables

Integrates with SARAH, SPheno, and PreSARAH for analytical and numerical computations

Abstract

We give a brief overview of FlavorKit, a kit for the study of flavor observables beyond the standard model. In contrast to previous flavor codes, FlavorKit is not restricted to a single model, but can be used to obtain predictions for flavor observables in a wide range of models. FlavorKit can be used in two different ways. The basic usage of FlavorKit allows for the computation of a large number of lepton and quark flavor observables, using generic analytical expressions for the Wilson coefficients of the relevant operators. The setup is based on the public codes SARAH and SPheno, and thus allows for the analytical and numerical computation of the observables in the model defined by the user. If necessary, the user can also go beyond the basic usage and define his own operators and/or observables. For this purpose, a Mathematica package called PreSARAH has been developed. This tool uses FeynArts and FormCalc to compute generic expressions for the required Wilson coefficients at the tree- and 1-loop levels. Similarly, the user can easily implement new observables. With all these tools properly combined, the user can obtain analytical and numerical results for the observables of his interest in the model of his choice.