SARAH treats some parameters or particles in a model in a specific way if they are associated with SM and MSSM parameters. In order to make this association, the Description statement in particles.m and parameters.m is used.
Usage of parameters
SARAH makes use of the information that some particles/parameters correspond to specific SM or MSSM parameters/particles for the following purposes:
FlavorKit generates the code to calculate flavour observables in the model by knowing what are the SM fermions are
For SM fields the pole masses are used for the decays in SPheno