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SARAH is a Mathematica package for studying supersymmetric models. Itcalculates for a given model the masses, tadpole equations and all vertices attree-level. Those information can be used by \SARAH to write model files forCalcHep/CompHep or FeynArts/FormCalc. In addition, the second version of SARAHcan derive the renormalization group equations for the gauge couplings,parameters of the superpotential and soft-breaking parameters at one andtwo-loop level. Furthermore, it calculates the one-loop self energies and theone-loop corrections to the tadpoles. SARAH can handle all N=1 SUSY modelswhose gauge sector is a direct product of SU(N) and U(1) gauge groups. Theparticle content of the model can be an arbitrary number of chiral superfieldstransforming as any irreducible representation with respect to the gaugegroups. To implement a new model, the user has just to define the gauge sector,the particle, the superpotential and the field rotations to mass eigenstates.

Automatic Calculation of supersymmetric Renormalization Group Equations and Self Energies