Supersymmetric baryogenesis in a hybrid inflation model
Abstract We study baryogenesis in a hybrid inflation model which is embedded to the minimal supersymmetric model with right-handed neutrinos. Inflation is induced by a linear combination of the right-handed sneutrinos and its decay reheats the universe. The decay products are stored in conserved num...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-08-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP08(2023)201 |
| _version_ | 1827781268494876672 |
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| author | Yoshihiro Gunji Koji Ishiwata Takahiro Yoshida |
| author_facet | Yoshihiro Gunji Koji Ishiwata Takahiro Yoshida |
| author_sort | Yoshihiro Gunji |
| collection | DOAJ |
| description | Abstract We study baryogenesis in a hybrid inflation model which is embedded to the minimal supersymmetric model with right-handed neutrinos. Inflation is induced by a linear combination of the right-handed sneutrinos and its decay reheats the universe. The decay products are stored in conserved numbers, which are transported under the interactions in equilibrium as the temperature drops down. We find that at least a few percent of the initial lepton asymmetry is left under the strong wash-out due to the lighter right-handed (s)neutrinos. To account for the observed baryon number and the active neutrino masses after a successful inflation, the inflaton mass and the Majorana mass scale should be 1013 GeV and O $$ \mathcal{O} $$ (109–1010) GeV, respectively. |
| first_indexed | 2024-03-11T15:16:27Z |
| format | Article |
| id | doaj.art-0cf38224e86f4770a6ba1569d12c58d2 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-11T15:16:27Z |
| publishDate | 2023-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-0cf38224e86f4770a6ba1569d12c58d22023-10-29T12:10:38ZengSpringerOpenJournal of High Energy Physics1029-84792023-08-012023811810.1007/JHEP08(2023)201Supersymmetric baryogenesis in a hybrid inflation modelYoshihiro Gunji0Koji Ishiwata1Takahiro Yoshida2Institute for Theoretical Physics, Kanazawa UniversityInstitute for Theoretical Physics, Kanazawa UniversityDepartment of Information, Kaishi Professional UniversityAbstract We study baryogenesis in a hybrid inflation model which is embedded to the minimal supersymmetric model with right-handed neutrinos. Inflation is induced by a linear combination of the right-handed sneutrinos and its decay reheats the universe. The decay products are stored in conserved numbers, which are transported under the interactions in equilibrium as the temperature drops down. We find that at least a few percent of the initial lepton asymmetry is left under the strong wash-out due to the lighter right-handed (s)neutrinos. To account for the observed baryon number and the active neutrino masses after a successful inflation, the inflaton mass and the Majorana mass scale should be 1013 GeV and O $$ \mathcal{O} $$ (109–1010) GeV, respectively.https://doi.org/10.1007/JHEP08(2023)201Baryo-and LeptogenesisCosmology of Theories BSMEarly Universe Particle PhysicsSupersymmetry |
| spellingShingle | Yoshihiro Gunji Koji Ishiwata Takahiro Yoshida Supersymmetric baryogenesis in a hybrid inflation model Journal of High Energy Physics Baryo-and Leptogenesis Cosmology of Theories BSM Early Universe Particle Physics Supersymmetry |
| title | Supersymmetric baryogenesis in a hybrid inflation model |
| title_full | Supersymmetric baryogenesis in a hybrid inflation model |
| title_fullStr | Supersymmetric baryogenesis in a hybrid inflation model |
| title_full_unstemmed | Supersymmetric baryogenesis in a hybrid inflation model |
| title_short | Supersymmetric baryogenesis in a hybrid inflation model |
| title_sort | supersymmetric baryogenesis in a hybrid inflation model |
| topic | Baryo-and Leptogenesis Cosmology of Theories BSM Early Universe Particle Physics Supersymmetry |
| url | https://doi.org/10.1007/JHEP08(2023)201 |
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