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  • Basic_usage_of_FlavorKit

Last edited by Martin Gabelmann Jun 28, 2019
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Basic_usage_of_FlavorKit

Basic usage of FlavorKit

General

This is the approach to be followed by the user who does not need any operator nor observable beyond what is already implemented in FlavorKit. In this case, FlavorKit reduces to the standard SARAH package. The user can use SARAH to obtain analytical results for the flavor observables and, if he wants to make numerical studies, to produce Fortran modules for SPheno.

Procedure

SARAH can handle the analytical derivation of all the relevant Wilson coefficients in the model defined by the user. The resulting expressions can be then extracted in LaTeX form or used to generate a SPheno module for numerical evaluation. These are the steps to follow in order to use SARAH :

  1. '''Loading SARAH ''': after starting Mathematica, SARAH is loaded via <<SARAH-4.2.0/SARAH.m

    or via

    <<[$path]/SARAH-4.2.0/SARAH.m

    The first choice works if SARAH has been installed in the Application directory of Mathematica. Otherwise, the absolute path to the local SARAH installation must been used.

  2. Initialize a model: as example for the initialization of a model in SARAH we consider the NMSSM Start[NMSSM];

  3. Obtaining the LaTeX output: the user can get LaTeX output with all the information about the model (including the coefficients for the flavor operators) via< ModelOutput[EWSB];
    MakeTeX[];

  4. Obtaining the SPheno code: to create the SPheno output the user should run MakeSPheno[];

Thanks to FlavorKit, SARAH can also write LaTeX files with the analytical expressions for the Wilson coefficients. These are given individually for each Feynman diagram contributing to the coefficients, and saved in the folder

/Output/[$MODEL]/EWSB/TeX/FlavorKit/

For the 4-fermion operators the results are divided into separated files for tree-level contributions, penguins contributions and box contributions. The corresponding Feynman diagrams are drawn by using FeynMF. To compile all Feynman diagrams at once and to generate the pdf file, a shell script called MakePDF_[$OPERATOR].sh is written as well by SARAH.

In case the user is interested in the numerical evaluation of the flavor observables, a SPheno module must be created as explained above. Once this is done, the resulting Fortrancode can be used for the numerical analysis of the model. This can be achieved in the following way:

  1. '''building SPheno ''': as soon as the SPheno output is finished, open a terminal and enter the root directory of the SPheno installation, and create a new subdirectory, copy the SARAH output to that directory and compile it > cd [$SPheno] > mkdir NMSSM > cp [$SARAH]/Output/NMSSM/EWSB/SPheno/* NMSSM/ > make Model=NMSSM

  2. Running SPheno : After the compilation, a new binary SPhenoNMSSM is created. This file can be executed providing a standard Les Houches input file (SARAH provides an example file, see the SARAH output folder). Finally, SPheno is executed via > ./bin/SPhenoNMSSM NMSSM/LesHouches.in.NMSSM

    This generates the output file SPheno.spc.NMSSM, which contains the blocks QFVobservables and LFVobservables. In those two blocks, the results for quark and lepton flavor violating observables are given.

See also

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Index

  • Additional terms in Lagrangian
  • Advanced usage of FlavorKit
  • Advanced usage of FlavorKit to calculate new Wilson coefficients
  • Advanced usage of FlavorKit to define new observables
  • Already defined Operators in FlavorKit
  • Already defined observables in FlavorKit
  • Auto-generated templates for particles.m and parameters.m
  • Automatic index contraction
  • Basic definitions for a non-supersymmetric model
  • Basic definitions for a supersymmetric model
  • Basic usage of FlavorKit
  • Boundary conditions in SPheno
  • CalcHep CompHep
  • Calculation of flavour and precision observables with SPheno
  • Checking the particles and parameters within Mathematica
  • Checks of implemented models
  • Conventions
  • Decay calculation with SPheno
  • Defined FlavorKit parameters
  • Definition of the properties of different eigenstates
  • Delete Particles
  • Different sets of eigenstates
  • Diphoton and digluon vertices with SPheno
  • Dirac Spinors
  • FeynArts
  • Fine-Tuning calculations with SPheno
  • Flags for SPheno Output
  • Flags in SPheno LesHouches file
  • FlavorKit
  • FlavorKit Download and Installation
  • Flavour Decomposition
  • GUT scale condition in SPheno
  • Gauge Symmetries SUSY
  • Gauge Symmetries non-SUSY
  • Gauge fixing
  • Gauge group constants
  • General information about Field Properties
  • General information about model implementations
  • Generating files with particle properties
  • Generic RGE calculation
  • Global Symmetries SUSY
  • Global Symmetries non-SUSY
  • Handling of Tadpoles with SPheno
  • Handling of non-fundamental representations
  • HiggsBounds
  • Higher dimensionsal terms in superpotential
  • Input parameters of SPheno
  • Installation
  • Installing Vevacious
  • LHCP
  • LHPC
  • LaTeX
  • Lagrangian
  • Loop Masses
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  • Low or High scale SPheno version
  • Main Commands
  • Main Model File
  • Matching to the SM in SPheno
  • MicrOmegas
  • ModelOutput
  • Model files for Monte-Carlo tools
  • Model files for other tools
  • Models with Thresholds in SPheno
  • Models with another gauge group at the SUSY scale
  • Models with several generations of Higgs doublets
  • More precise mass spectrum calculation
  • No SPheno output possible
  • Nomenclature for fields in non-supersymmetric models
  • Nomenclature for fields in supersymmetric models
  • One-Loop Self-Energies and Tadpoles
  • One-Loop Threshold Corrections in Scalar Sectors
  • Options SUSY Models
  • Options non-SUSY Models
  • Parameters.m
  • Particle Content SUSY
  • Particle Content non-SUSY
  • Particles.m
  • Phases
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  • Presence of super-heavy particles
  • RGE Running with Mathematica
  • RGEs
  • Renormalisation procedure of SPheno
  • Rotations angles in SPheno
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  • SARAH in a Nutshell
  • SARAH wiki
  • SLHA input for Vevacious
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  • SPheno Higgs production
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  • SPheno files
  • SPheno mass calculation
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  • Setting up SPheno.m
  • Setting up Vevacious
  • Setting up the SPheno properties
  • Special fields and parameters in SARAH
  • Superpotential
  • Support of Dirac Gauginos
  • Supported Models
  • Supported gauge sectors
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  • Supported options for symmetry breaking
  • Supported particle mixing
  • Tadpole Equations
  • The renormalisation scale in SPheno
  • Tree-level calculations
  • Tree Masses
  • Two-Loop Self-Energies and Tadpoles
  • UFO
  • Usage of tadpoles equations
  • Using SPheno for two-loop masses
  • Using auxiliary parameters in SPheno
  • VEVs
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  • Vevacious
  • WHIZARD