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Manuscript Title: SuSeFLAV 1.2: program for supersymmetric mass spectra with seesaw mechanism and rare lepton flavor violating decays
Authors: Debtosh Chowdhury, Raghuveer Garani, Sudhir K. Vempati
Program title: SuSeFLAV
Catalogue identifier: AEOD_v1_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 184(2013)899
Programming language: Fortran 95.
Computer: Personal Computer, Work-Station.
Operating system: Linux, Unix.
Keywords: MSSM, Right Handed Neutrinos, Lepton Flavor Violation.
Classification: 11.6.

Nature of problem:
Determination of masses and mixing of supersymmetric particles within the context of MSSM with conserved R-parity with and without the presence of Type-I seesaw. Inter-generational mixing is considered while calculating the mass spectrum. Supersymmetry breaking parameters are taken as inputs at a high scale specified by the mechanism of supersymmetry breaking. RG equations including full inter-generational mixing are then used to evolve these parameters up to the electroweak breaking scale. The low energy supersymmetric spectrum is calculated at the scale where successful radiative electro-weak symmetry breaking occurs. At weak scale Standard Model fermion masses, gauge couplings are determined including the supersymmetric radiative corrections. Once the spectrum is computed, the program proceeds to various lepton flavor violating observables (e.g., BR(μ → eγ), BR(τ → μγ) etc.) at the weak scale.

Solution method:
Two loop RGEs with full 3 x 3 flavor mixing for all supersymmetry breaking parameters are used to compute the low energy supersymmetric mass spectrum. Adaptive step size Runge-Kutta method is used to solve the RGEs numerically between the high scale and the electroweak breaking scale. Iterative procedure is employed to get the consistent radiative electroweak symmetry breaking condition. The masses of the supersymmetric particles are computed at 1-loop order. The third generation SM particles and the gauge couplings are evaluated at the 1-loop order including supersymmetric corrections. A further iteration of the full program is employed such that the SM masses and couplings are consistent with the supersymmetric particle spectrum.

Additional comments:
Several executables are presented for the user.

Running time:
0.2 seconds on a Intel(R) Core(TM) i5 CPU 650 with 3.20 GHz.