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---
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title: Main Model File
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permalink: /Main_Model_File/
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---
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[Category:Model](/Category:Model "wikilink")
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General
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-------
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The main model file is the most important piece of information about an implemented model SARAH: it contains all information about the particle content, the local and global symmetries, and about the interactions.
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### Head of the model file
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At the very beginning of a model file, some additional information about the model implementation can be given: what’s the name of the model (in LaTeX syntax as well as string without any special character), who is the author of the model file and when was the last change:
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Model`Name = "BLSSM";
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Model`NameLaTeX ="B-L-SSM";
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Model`Authors = "L.Basso, F.Staub";
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Model`Date = "2012-09-01";
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### Definition needed for the gauge eigenstates
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1. Global symmetrie are defined in an array <span>Global</span>, see [Global Symmetries SUSY](/Global_Symmetries_SUSY "wikilink") and [Global Symmetries non-SUSY](/Global_Symmetries_non-SUSY "wikilink")
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Global[[/1|1]] = {...
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2. Gauge structure of the model given by the vector superfields, see [Gauge Symmetries non-SUSY](/Gauge_Symmetries_non-SUSY "wikilink") and [Gauge Symmetries SUSY](/Gauge_Symmetries_SUSY "wikilink")
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Gauge[[/1|1]] = {...
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3. Matter content given by either chiral superfields, see [Particle Content SUSY](/Particle_Content_SUSY "wikilink")
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SuperFields[[/1|1]] = { ...
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or fermion and scalar fields for non-SUSY models, see [Particle Content non-SUSY](/Particle_Content_non-SUSY "wikilink")
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FermionFields[[/1|1]] = { ...
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ScalarFields[[/1|1]] = { ...
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4. Superpotential, see [Superpotential](/Superpotential "wikilink")
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SuperPotential { ...
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or the Potential, see [Potential](/Potential "wikilink")
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DEFINITION[$EIGENSTATES][LagrangianInput] = { ...
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### Definition of the different eigenstates
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Names for the different eigenstates, see sec. \[NameOfStates\]
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NameOfStates = { ...
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### Definition of the properties of all eigenstates
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1. Vacuum expectation values, see sec. \[VEV\]
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DEFINITION[$EIGENSTATES][VEVs]= { ...
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2. Rotations in the gauge sector, see [Rotations in gauge sector](/Rotations_in_gauge_sector "wikilink")
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DEFINITION[$EIGENSTATES][GaugeSector]= { ...
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3. Expansion of flavors, see [Flavour Decomposition](/Flavour_Decomposition "wikilink")
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DEFINITION[$EIGENSTATES][Flavors]= { ...
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4. Rotations in the matter sector, see [Rotations in matter sector](/Rotations_in_matter_sector "wikilink")
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DEFINITION[$EIGENSTATES][MatterSector]= { ...
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5. Gauge fixing terms: since version 3.1 no longer needed as input, see [Gauge fixing](/Gauge_fixing "wikilink")
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6. Additional couplings or redefinition of existing couplings, see [Additional terms in Lagrangian](/Additional_terms_in_Lagrangian "wikilink")
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DEFINITION[$EIGENSTATES][Additional]= { ...
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7. Definition of Dirac spinors, see [Dirac Spinors](/Dirac_Spinors "wikilink")
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DEFINITION[$EIGENSTATES][DiracSpinors]= { ...
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### Additional information
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1. Flags to switch on/off different parts of the Lagrangian
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- [Options for SUSY Models](/Options_SUSY_Models "wikilink")
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- [Options for non-SUSY Models](/Options_non-SUSY_Models "wikilink")
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2. Deleting particles, see [Delete Particles](/Delete_Particles "wikilink")
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DeleteParticles[[/1|1]] = { ...
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</li>
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</ol>
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See also
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-------- |
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\ No newline at end of file |