Sterile neutrino dark matter in a U(1) extension of the standard model

@article{Iwamoto2021SterileND,
  title={Sterile neutrino dark matter in a U(1) extension of the standard model},
  author={Sho Iwamoto and K'aroly Seller and Zolt'an Tr'ocs'anyi},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2021},
  volume={2022}
}
We explore the parameter space of a U(1) extension of the standard model — also called the super-weak model — from the point of view of explaining the observed dark matter energy density in the Universe. The new particle spectrum contains a complex scalar singlet and three right-handed neutrinos, among which the lightest one is the dark matter candidate. We explore both freeze-in and freeze-out mechanisms of dark matter production. In both cases, we find regions in the plane of the super-weak… 

Sterile neutrino dark matter in the super-weak model

  • K. Seller
  • Physics
    Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)
  • 2022
The super-weak model is a U(1) extension of the Standard Model. In addition to a mediator 𝑍 (cid:48) , a singlet scalar field 𝜒 is added to deal with the meta-stability of the SM vacuum, and

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