Version 4 (modified by an_drikos, 4 years ago) (diff)


The Inert Doublet Model

Implementation authors

  • Andreas Goudelis (andreas.goudelis@…)
    • Laboratoire d'Annecy-le-Vieux de Physique Theorique, Annecy, France
  • Björn Herrmann (herrmann@…)
    • Laboratoire d'Annecy-le-Vieux de Physique Theorique, Annecy, France
  • Oscar Stal (oscar.stal@…)
    • Oscar Klein Center, Stockholm, Sweden

(work done in part at the Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany)

Model description

This is the FeynRules model file for the Inert Doublet Model, , i.e. the Standard Model augmented by an additional complex scalar SU(2) doublet and an unbroken Z2 symmetry under which all SM particles are even while the extra doublet is odd.


  • InertDoublet.tar : the FeynRules model files.
  • IDMload.nb : example mathematica notebook to load the file.


  • All sectors of the model has been cross-checked against an independent implementation with the SARAH package. A very large number of processes involving all model particles and vertices were computed, and perfect agreement was found.


If you use these model files, please cite

  • A. Goudelis, B. Herrmann, O. Stal, Dark matter in the Inert Doublet Model after the discovery of a Higgs-like boson at the LHC, JHEP 1309 (2013) 106, arXiv:1303.3010 [hep-ph].


  • The implementation comes in both Feynman and Unitary gauge, chosen from within the file.
  • The model file follows the older (pre v1.8) FeynRules notations, but works perfectly with version 1.8.
  • The inert doublet particles carry tildes (~) in their particle names. This is in compliance to the CalcHEP/MicrOMEGAs conventions, in which all Z2-odd particles must be named with tildes. In other programs, the user might have to remove them.