LHC-friendly minimal freeze-in models with a charged parent

Implementation Authors

Genevieve Belanger, Nishita Desai, Andreas Goudelis, Julia Harz, Andre Lessa, Jose Miguel No, Alexander Pukhov, Sezen Sekmen, Dipan Sengupta, Bryan Zaldivar, Jose Zurita

Model description

In this set of three models, the Standard Model of particle physics (SM) is augmented by a gauge singlet scalar particle s, which plays the role of a dark matter candidate, along with an SU(2)_L-singlet vector-like fermion F. These particles are taken to be odd under a discrete Z₂ symmetry, whereas the SM is taken to be even. The dark matter particles communicate with the SM through Yukawa-type interactions involving the left-handed component of the vector-like fermion and the right-handed component of the SM fermions, as well as through the Higgs portal interaction. The three models are distinguished by the SU(3)_c X U(1)_Y transformation properties of F, which depend on whether the new Yukawa-type interactions involve the SM right-handed leptons, up-type quarks or down-type quarks. For more details please cf the accompanying pdf that can be found in the Attachments section.

Files

• modeldescription.pdf: A detailed description of the three models, including the particle content, Lagrangian, parameter names and conventions.

• LesHouchesModelFreezeIn-leptons.tar.gz: The "heavy lepton" model (FeynRules implementation and sample notebook for model file creation, UFO and CalcHEP model files)

• LesHouchesModelFreezeIn-up.tar.gz: The "heavy up-type quark" model (FeynRules implementation and sample notebook for model file creation, UFO and CalcHEP model files)

• LesHouchesModelFreezeIn-down.tar.gz: The "heavy down-type" model (FeynRules implementation and sample notebook for model file creation, UFO and CalcHEP model files)

Validation

The model files have been independently checked by several of the authors

References

If you use these model files, please cite

• G. Brooijmans et. al., Les Houches 2017: Physics at TeV Colliders - New Physics Working Group Report, ​arXiv:1803.10379 [hep-ph]

• G. Bélanger, N. Desai, A. Goudelis, J. Harz, A. Lessa, J.M. No, A. Pukhov, S. Sekmen, D. Sengupta, B. Zaldivar, J. Zurita, LHC-friendly minimal freeze-in models, ​arXiv:1811.05478'