SUSYFLAVOR v2: A Computational tool for FCNC and CP-violating processes in the MSSM

Crivellin, A.; Rosiek, J.; Chankowski, P. H.; Dedes, A.; Jaeger, S.; Tanedo, P. (2013). SUSYFLAVOR v2: A Computational tool for FCNC and CP-violating processes in the MSSM. Computer Physics Communications, 184(3), pp. 1004-1032. Elsevier 10.1016/j.cpc.2012.11.007

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We present SUSY_FLAVOR version 2 — a Fortran 77 program that calculates low-energy flavor observables
in the general R-parity conserving MSSM. For a set of MSSM parameters as input, the code gives
predictions for:
1. Electric dipole moments of the leptons and the neutron.
2. Anomalous magnetic moments (i.e. g − 2) of the leptons.
3. Radiative lepton decays (μ → eγ and τ → μγ , eγ ).
4. Rare Kaon decays (K0
L → π0 ¯νν and K+ → π+ ¯νν).
5. Leptonic B decays (Bs,d → l+l−, B → τ ν and B → Dτ ν).
6. Radiative B decays (B → ¯ Xsγ ).
7. ΔF = 2 processes ( ¯ K0–K0, ¯D–D, ¯Bd–Bd and ¯Bs–Bs mixing).
Comparing to SUSY_FLAVOR v1, where the matching conditions were calculated strictly at one-loop level,
SUSY_FLAVOR v2 performs the resummation of all chirally enhanced corrections, i.e. takes into account
the enhanced effects from tan β and/or large trilinear soft mixing terms to all orders in perturbation
theory. Also, in SUSY_FLAVOR v2 new routines calculation of B → (D)τ ν, g − 2, radiative lepton decays
and Br(l → l′γ ) were added. All calculations are done using exact diagonalization of the sfermion mass
matrices. The program can be obtained from http://www.fuw.edu.pl/susy_flavor.

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