Electric dipole moments in the extended scotogenic models
Abstract Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the minimal scotogenic model with two singlet fermions, and the models extended with one or two triplet fermions ins...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-04-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP04(2021)114 |
| _version_ | 1819284135281164288 |
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| author | Motoko Fujiwara Junji Hisano Chihiro Kanai Takashi Toma |
| author_facet | Motoko Fujiwara Junji Hisano Chihiro Kanai Takashi Toma |
| author_sort | Motoko Fujiwara |
| collection | DOAJ |
| description | Abstract Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the minimal scotogenic model with two singlet fermions, and the models extended with one or two triplet fermions instead of the singlet fermions, taking into account the constraints of the neutrino oscillation data, the charged lepton flavor violation and perturbative unitarity bound for the Yukawa couplings. We show that the hybrid model with one singlet and one triplet fermions predicts an electron EDM larger than the other models in both normal and inverted neutrino mass hierarchy. We find some parameter space has already been ruled out by the current upper bound of the electron EDM and further parameter space can be explored by future experiments. |
| first_indexed | 2024-12-24T01:42:34Z |
| format | Article |
| id | doaj.art-60216ae8a01b4dc1b6d00161d0603497 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-24T01:42:34Z |
| publishDate | 2021-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-60216ae8a01b4dc1b6d00161d06034972022-12-21T17:21:58ZengSpringerOpenJournal of High Energy Physics1029-84792021-04-012021411910.1007/JHEP04(2021)114Electric dipole moments in the extended scotogenic modelsMotoko Fujiwara0Junji Hisano1Chihiro Kanai2Takashi Toma3Department of Physics, Nagoya UniversityDepartment of Physics, Nagoya UniversityDepartment of Physics, Nagoya UniversityInstitute of Liberal Arts and Science, Kanazawa UniversityAbstract Electric dipole moments (EDMs) of charged leptons arise from a new source of CP violation in the lepton sector. In this paper, we calculate the EDMs of the charged leptons in the minimal scotogenic model with two singlet fermions, and the models extended with one or two triplet fermions instead of the singlet fermions, taking into account the constraints of the neutrino oscillation data, the charged lepton flavor violation and perturbative unitarity bound for the Yukawa couplings. We show that the hybrid model with one singlet and one triplet fermions predicts an electron EDM larger than the other models in both normal and inverted neutrino mass hierarchy. We find some parameter space has already been ruled out by the current upper bound of the electron EDM and further parameter space can be explored by future experiments.https://doi.org/10.1007/JHEP04(2021)114Beyond Standard ModelCP violationNeutrino Physics |
| spellingShingle | Motoko Fujiwara Junji Hisano Chihiro Kanai Takashi Toma Electric dipole moments in the extended scotogenic models Journal of High Energy Physics Beyond Standard Model CP violation Neutrino Physics |
| title | Electric dipole moments in the extended scotogenic models |
| title_full | Electric dipole moments in the extended scotogenic models |
| title_fullStr | Electric dipole moments in the extended scotogenic models |
| title_full_unstemmed | Electric dipole moments in the extended scotogenic models |
| title_short | Electric dipole moments in the extended scotogenic models |
| title_sort | electric dipole moments in the extended scotogenic models |
| topic | Beyond Standard Model CP violation Neutrino Physics |
| url | https://doi.org/10.1007/JHEP04(2021)114 |
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