EWFF4DM: DM effective field theory with hypercharge electromagnetic form factors

Authors

Andrew Cheek

• andrew.cheek@…
  

Luca Pagani

• luca.pagani7@…
  

Ken Mimasu

• ken.mimasu@…
  

Chiara Arina

• chiara.arina@…
  

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Model description

We consider the effective interactions of a fermionic singlet dark matter particle with the SM hypercharge gauge boson field. The only non zero form factor operator for Majorana dark matter is the dimension-6 anapole moment, while for Dirac dark matter there exist the dimension-5 magnetic and electric dipole operators and the dimension-6 anapole and charge radius operators.

The detailed Lagrangian and more information can be found in ​arXiv:2005.XXXXX [hep-ph].

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Description of the Model Files

• Feynrules model file
  
  • EWFF4DM.fr, Main FeynRules model for the model, it already contains the SM Feynrules model.
    

• UFO model files
  
  • EWFF4DM_UFO.tar.gz, Standalone LO UFO folder in the EWFF4DM models.
    

The actual files are provided in attachment. The dark matter candidate is called chi for both Majorana and Dirac cases.