FeynRules
Material
The latest version of FeynRules: download here.
The FeynRules (not up-to-date) manual: download here.
The slides associated to the lectures: download here.
Model files
During the lectures, a supersymmetric (SUSY) QCD theory is implemented.
- The gauge group is SU(3)_c (as in QCD)
- The field content is given by
- Three generations of up-type quarks
- Three generations of up-type left-handed squarks
- Three generations of up-type right-handed squarks
- A gluon
- A gluino
- The free parameters of the theory consists in
- The masses of the particles
- The strong coupling constant (both gs and alpha_s)
- For the Lagrangian, see the slides.
The implementation has been performed in three different ways which will illustrate the different features of FeynRules.
- The good old way, using regular fields including a four-component representation for the fermions: susyqcd_dirac.fr
- A better approach, using regular fields including a two-component representation for the fermions: susyqcd_weyl.fr
- The best method for supersymmetric theoric, using superfields: susyqcd_sf.fr
In the case you want to start from your own Weyl fermion implementation to get the superfield implementation, you will have to replace right-handed Weyl quarks and right-handed squarks by their charge-conjugate counterparts. Since this will not be performed explicitly during the lectures, you can either do it yourself or download the add-on to merge to your model file here.
Tutorial
Documentation for projects 4 and 5:
