The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe
Abstract The electric dipole moment is examined in a three-loop neutrino mass model with dark matter originally proposed in Aoki et al. [Phys. Rev. Lett. 102 (2009) 051805]. The model contains a CP-violating phase in the Higgs potential which plays an important role in electroweak baryogenesis and i...
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| Format: | Article |
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SpringerOpen
2025-06-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP06(2025)036 |
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| author | Kazuki Enomoto Shinya Kanemura Sora Taniguchi |
| author_facet | Kazuki Enomoto Shinya Kanemura Sora Taniguchi |
| author_sort | Kazuki Enomoto |
| collection | DOAJ |
| description | Abstract The electric dipole moment is examined in a three-loop neutrino mass model with dark matter originally proposed in Aoki et al. [Phys. Rev. Lett. 102 (2009) 051805]. The model contains a CP-violating phase in the Higgs potential which plays an important role in electroweak baryogenesis and is thus expected to explain the baryon asymmetry of the Universe simultaneously. However, such a CP-violating phase is severely constrained by the measurements of the electron electric dipole moment (eEDM), and a suppression mechanism for the eEDM is necessary to explain the observed baryon asymmetry while avoiding the constraint. In this paper, we examine neutrino mass, lepton-flavor-violating processes, dark matter, and the eEDM in the model. We show that the eEDM can be suppressed by destructive interference between the CP-violating phases in the Higgs sector and the dark sector with large CP-violating phases. We propose some benchmark scenarios including O(1) CP-violating phases where tiny neutrino mass and dark matter can be explained while avoiding all current experimental and theoretical constraints. These CP-violating phases are expected to be large enough to generate the observed baryon asymmetry in the electroweak baryogenesis scenario. |
| format | Article |
| id | doaj-art-1a1935c212e04720a2bc8b61900716c8 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-1a1935c212e04720a2bc8b61900716c82025-08-20T03:45:39ZengSpringerOpenJournal of High Energy Physics1029-84792025-06-012025614010.1007/JHEP06(2025)036The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the UniverseKazuki Enomoto0Shinya Kanemura1Sora Taniguchi2Department of Physics, KAISTDepartment of Physics, Osaka UniversityDepartment of Physics, Osaka UniversityAbstract The electric dipole moment is examined in a three-loop neutrino mass model with dark matter originally proposed in Aoki et al. [Phys. Rev. Lett. 102 (2009) 051805]. The model contains a CP-violating phase in the Higgs potential which plays an important role in electroweak baryogenesis and is thus expected to explain the baryon asymmetry of the Universe simultaneously. However, such a CP-violating phase is severely constrained by the measurements of the electron electric dipole moment (eEDM), and a suppression mechanism for the eEDM is necessary to explain the observed baryon asymmetry while avoiding the constraint. In this paper, we examine neutrino mass, lepton-flavor-violating processes, dark matter, and the eEDM in the model. We show that the eEDM can be suppressed by destructive interference between the CP-violating phases in the Higgs sector and the dark sector with large CP-violating phases. We propose some benchmark scenarios including O(1) CP-violating phases where tiny neutrino mass and dark matter can be explained while avoiding all current experimental and theoretical constraints. These CP-violating phases are expected to be large enough to generate the observed baryon asymmetry in the electroweak baryogenesis scenario.https://doi.org/10.1007/JHEP06(2025)036Electric Dipole MomentsLepton Flavour Violation (charged)Models for Dark MatterMulti-Higgs Models |
| spellingShingle | Kazuki Enomoto Shinya Kanemura Sora Taniguchi The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe Journal of High Energy Physics Electric Dipole Moments Lepton Flavour Violation (charged) Models for Dark Matter Multi-Higgs Models |
| title | The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe |
| title_full | The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe |
| title_fullStr | The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe |
| title_full_unstemmed | The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe |
| title_short | The electric dipole moment in a model for neutrino mass, dark matter and baryon asymmetry of the Universe |
| title_sort | electric dipole moment in a model for neutrino mass dark matter and baryon asymmetry of the universe |
| topic | Electric Dipole Moments Lepton Flavour Violation (charged) Models for Dark Matter Multi-Higgs Models |
| url | https://doi.org/10.1007/JHEP06(2025)036 |
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