Full 1-loop calculation of BR(Bs,d0→ℓℓ̄) in models beyond the MSSM with SARAH  and SPheno

We present the possibility of calculating the quark flavor changing neutral current decays Bs0→ℓℓ̄ and Bd0→ℓℓ̄ for a large variety of supersymmetric models. For this purpose, the complete one-loop calculation has been implemented in a generic form in the Mathematica package SARAH. This information is used by SARAH to generate Fortran source code for SPheno for a numerical evaluation of these processes in a given model. We comment also on the possibility to use this setup for non-supersymmetric models. Program title: SARAH Catalogue identifier: AEIB_v2_1 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEIB_v2_1.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 467777 No. of bytes in distributed program, including test data, etc.: 3927691 Distribution format: tar.gz Programming language: Mathematica, Fortran. Computer: All computers which can run Mathematica and SPheno. Operating system: Linux, MacOS. Classification: 11.1, 11.6. Catalogue identifier of previous version: AEIB_v2_0 Journal reference of previous version: Comput. Phys. Comm. 184 (2013) 1792 Does the new version supercede the previous version?: Yes, the new version includes all known features of previous versions but provides also the new features mentioned below. Nature of problem: Models beyond the SM can have new contributions to the decays of neutral B-mesons. For a precise prediction of the corresponding branching ratios a full 1-loop calculation including all possible wave, penguin and box diagrams is necessary. This usually requires a big effort and public codes for these calculations so far only support a few selected models. Solution method: The implementation of a new model in SARAH is easy and straightforward. In addition, SARAH is already delivered with many different supersymmetric and a few non-supersymmetric models. As a first step, SARAH derives the analytical expressions for masses, interactions and renormalization group equations for the given model. Furthermore, SARAH checks for all possible tree- and 1-loop diagrams which can contribute to the B-meson decays into two leptons. This information is exported to Fortran source code which can afterwards be compiled with SPheno. This generates a fully functional spectrum generator: besides the mass spectrum, sparticle and Higgs decays