Journal of High Energy Physics

, 2018:59 | Cite as

Singlet Dirac fermion dark matter with mediators at loop

  • Junji Hisano
  • Ryo NagaiEmail author
  • Natsumi Nagata
Open Access
Regular Article - Theoretical Physics


We study the phenomenology of singlet Dirac fermion dark matter in the simplified models where the dark matter interacts with the Standard Model particles at loop-level with the help of either colored or non-colored mediators. We especially focus on the implications of non-zero CP phases in the dark sector, which induce the electric dipole moments of the Dirac fermion dark matter as well as those of electron and nucleon. It is then found that the dark matter direct detection searches and the measurements of the electric dipole moments are able to test the singlet Dirac fermion dark matter scenario in the forthcoming experiments.


Beyond Standard Model CP violation 


Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


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© The Author(s) 2018

Authors and Affiliations

  1. 1.Kobayashi-Maskawa Institute for the Origin of Particles and the UniverseNagoya UniversityNagoyaJapan
  2. 2.Department of PhysicsNagoya UniversityNagoyaJapan
  3. 3.Kavli IPMU (WPI), UTIAS, University of TokyoKashiwaJapan
  4. 4.Department of PhysicsTohoku UniversitySendaiJapan
  5. 5.Department of PhysicsUniversity of TokyoTokyoJapan

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