=============================================== FlavorKit by W. Porod, F. Staub, A. Vicente (pre-release with SARAH 4.2.0beta) =============================================== The aims of the FlavorKit functionality are - a modular implementation of precision observables in SARAH and SPheno - an automatized calculation of the necessary operators - providing the possibility to the user to add new observables and operators to SARAH/SPheno Realization: - The entire implementation of precision observables is no longer hardcoded in SARAH but based on external files which are put into the sub-directoy "FlavorKit" of SARAH - The necessary input files for the generic expressions of the operators are generated by another Mathematica package which makes use of FeynArts/FormCalc. This package is going to be made public with the final release of the FlavorKit. - Observables are defined by 1) a steering file .m which defines the necessary operators as well as the variables which are written to the SPheno spectrum file 2) a file with the necessary lines of Fortran source code to calculate the observables from the operators Examples: We have made use of the new functionality to (re-) implement the following observables in SARAH: - Lepton Flavor violating observables (SARAH/FlavorKit/LFV/): 1) l -> l' gamma 2) l -> 3 l' 3) mu-e conversion 4) tau -> l + meson 5) Z -> l l' 6) h -> l l' - Quark Flavor violating observables (SARAH/FlavorKit/QFV/): 1) b -> s gamma 2) B_s -> l l', B_d -> l l' 3) B -> s l l' 4) B -> q nu nu 5) Delta M_K, epsilon_K 6) Delta M_Bs, Delta M_Bd 7) K^+ -> pi^+ nu nu 8) K_L -> pi_L nu nu 9) B -> K mu mu 10) B^+ -> tau nu 11) D -> mu nu 12) D_s -> mu nu, D_s -> tau nu 13) K -> mu nu A complete documentation is published soon.