Setting up SPheno.m

For the SPheno output of SARAH, an additional input file is needed, to define the properties of the generated SPheno version. This file must be located in the same directory as the other input files of the current model and is called by default SPheno.m. The following properties can be defined via this file:

1. The choice between a Low or High scale SPheno version via
   • OnlyLowEnergySPheno=True/False;
2. Input parameters of SPheno via
   • MINPAR={...};
   • MINPAR={...};
   • LHInput[x]
3. Boundary conditions via
   • BoundaryLowScaleInput={...};
   • BoundaryEWSBScale={...};
   • BoundarySUSYScale={...};
   • BoundaryHighScale={...};
   • BoundaryEWSBScaleRunningDown={...}
4. Handling of Tadpoles with SPheno via
   • ParametersToSolveTadpoles={...};
   • ParametersToSolveTadpolesLowScaleInput={...};
5. GUT scale condition in SPheno via
   • ConditionGUTscale = x==y;
6. The renormalisation scale in SPheno via
   • RenormalizationScaleFirstGuess = x;
   • RenormalizationScale = x;
7. More precise mass spectrum calculation via
   • QuadruplePrecision={...};
8. List of decaying particles via
   • ListDecayParticles = {...} / Automatic;
   • ListDecayParticles3B = {...} / Automatic;
9. The parameters to calculate the Fine-Tuning in SPheno
   • FineTuningParameters={...} together with IncludeFineTuning = True;
10. Possible flags to turn on/off different features in the SPheno output:
    • Use2LoopFromLiterature = True/False;
    • FlagLoopContributions = True/False;
    • NeglectLoopsInvolving = {...}
11. List of auxiliary parameters via
    • AuxiliaryParametersSPheno={...};
12. Initialisation values of parameters in SPheno
    • InitializationValues = {...};
13. Some options to deal with models which extended gauge sectors or additional Higgs doublets
    • Models with another gauge group at the SUSY scale via
      • ExpressionAuxHypercharge = function; together with AuxiliaryHyperchargeCoupling = True;
    • Models with several generations of Higgs doublets via
      • DEFINITION[MoreEWvevs]={...};
      • DEFINITION[UseNonStandardYukwas]=True/False;
      • DEFINITION[NonStandardYukawas]={...};
      • DEFINITION[NonStandardVEVs1L]={...};
      • DEFINITION[NonStandardVEVs1Lrelations]={...}

See also