# FeynRules

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 Revision as of 10:27, 25 June 2009 (view source)m ← Previous diff Revision as of 10:27, 25 June 2009 (view source)m Next diff → Line 42: Line 42: ** How to give credits to all people involved in the chain Model Building > FeynRules inmplementation > Monte Carlo simulations? ** How to give credits to all people involved in the chain Model Building > FeynRules inmplementation > Monte Carlo simulations? *** Every FeynRules implementation should cite the reference papers of the model. *** Every FeynRules implementation should cite the reference papers of the model. - **** All this information should be encoded in the FeynRules model files via [itex]\textt{M\$Information}[/itex]. + **** All this information should be encoded in the FeynRules model files via [itex]\texttt{M\$Information}[/itex].

## Revision as of 10:27, 25 June 2009

The FeynRules project

• Implementation and validation of new models
• B-L: implemetation completed, validation in MC tools ongoing (L. Basso).
• Dirac gauginos: Dirac gluinos are implemented. The implementation of the full model is ongoing (C. Duhr, P. Fox, B. Fuks, G. Kribbs, A. Martin).
• MSSM: Validation of the model in Sherpa has started and is ongoing (C. Duhr, B. Fuks, S. Schumann).
• NMSSM: Implementation of the model is complete. Validation again Whizard will soon start (Herwig++?) (C. Duhr, B. Fuks, J. Reuter).
• RPV MSSM: Implementation is achieved (C. Duhr, B. Fuks).

• Validation procedure
• Any model can be put on the FeynRules website.
• Each model will be rated regarding the validation performed, from zero to four stars.
• The platform (Linux version, ...), the Mathematica version, the FeynRules version and the MC generator versions, if relevant, used for the checks must be indicated.
• Guidelines for validation
• First star [DOC]
• The model should be documented (description, references to the Lagrangian and field content, ...).
• If the model is only a theory fragment, this should be stated.
• Consistency of the input parameters (external vs. internal, all external plus a spectrum generator,...).
• Second star [THEO]
• Basic sanity checks: hermiticity of the Lagrangian, signs in the covariant derivatives, ...
• If the Feynman rules are available in the literature, comparison (+ references).
• If any theoretical work is available in the literature, reproduction (handmade or FeynArts/FormCalc or any other symbolic tool).
• Third star [1MC]
• Check some basic processes like Drell-Yan or bhabha scattering and that the MC is producing reliable results (running of alpha_s, QED running, ...).
• Gauge invariance (e.g. several gauges in CalcHep, numerical checks in other MC tools).
• Reproduce SM results for sectors independent on new physics.
• Behaviour at high energy (unitarity cancellations).
• Produce numerical tables for cross sections or any observables for future references.
• Fourth star [nMC]
• Show that the [1MC] step can be reproduced by more than one MC generators.
• Produce some comparison tables for future references.

• All this information should be encoded in the FeynRules model files via $\texttt{MInformation}$.