Mu-tau reflection symmetry with a high scale texture-zero
Abstract The μτ -reflection symmetric neutrino mass matrix can accommodate all known neutrino mixing angles, with maximal atmospheric angle fixed, and predicts all the unknown CP phases of the lepton sector but is unable to predict the absolute neutrino mass scale. Here we present a highly predictiv...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-09-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP09(2018)042 |
| _version_ | 1818247696347037696 |
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| author | C. C. Nishi B. L. Sánchez-Vega G. Souza Silva |
| author_facet | C. C. Nishi B. L. Sánchez-Vega G. Souza Silva |
| author_sort | C. C. Nishi |
| collection | DOAJ |
| description | Abstract The μτ -reflection symmetric neutrino mass matrix can accommodate all known neutrino mixing angles, with maximal atmospheric angle fixed, and predicts all the unknown CP phases of the lepton sector but is unable to predict the absolute neutrino mass scale. Here we present a highly predictive scenario where μτ -reflection is combined with a discrete abelian symmetry to enforce a texture-zero in the mass matrix of the heavy right-handed neutrinos that generate the light neutrino masses. Such a restriction reduces the free parameters of the low energy theory to zero and the absolute neutrino mass scale is restricted to few discrete regions, three in the few meV range and one extending up to around 30 meV. The heavy neutrino sector is dependent only on two free parameters which are further restricted to small regions from the requirement of successful leptogenesis. Mass degenerate heavy neutrinos are possible in one case but there is no resonant enhancement of the CP asymmetry. |
| first_indexed | 2024-12-12T15:08:48Z |
| format | Article |
| id | doaj.art-0c0ac8caac0c49d292a14d815cd5099d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-12T15:08:48Z |
| publishDate | 2018-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-0c0ac8caac0c49d292a14d815cd5099d2022-12-22T00:20:40ZengSpringerOpenJournal of High Energy Physics1029-84792018-09-012018913010.1007/JHEP09(2018)042Mu-tau reflection symmetry with a high scale texture-zeroC. C. Nishi0B. L. Sánchez-Vega1G. Souza Silva2Centro de Matemática, Computação e Cognição, Universidade Federal do ABC — UFABCCentro de Ciências Naturais e Humanas, Universidade Federal do ABC — UFABCCentro de Ciências Naturais e Humanas, Universidade Federal do ABC — UFABCAbstract The μτ -reflection symmetric neutrino mass matrix can accommodate all known neutrino mixing angles, with maximal atmospheric angle fixed, and predicts all the unknown CP phases of the lepton sector but is unable to predict the absolute neutrino mass scale. Here we present a highly predictive scenario where μτ -reflection is combined with a discrete abelian symmetry to enforce a texture-zero in the mass matrix of the heavy right-handed neutrinos that generate the light neutrino masses. Such a restriction reduces the free parameters of the low energy theory to zero and the absolute neutrino mass scale is restricted to few discrete regions, three in the few meV range and one extending up to around 30 meV. The heavy neutrino sector is dependent only on two free parameters which are further restricted to small regions from the requirement of successful leptogenesis. Mass degenerate heavy neutrinos are possible in one case but there is no resonant enhancement of the CP asymmetry.http://link.springer.com/article/10.1007/JHEP09(2018)042Beyond Standard ModelNeutrino PhysicsCP violation |
| spellingShingle | C. C. Nishi B. L. Sánchez-Vega G. Souza Silva Mu-tau reflection symmetry with a high scale texture-zero Journal of High Energy Physics Beyond Standard Model Neutrino Physics CP violation |
| title | Mu-tau reflection symmetry with a high scale texture-zero |
| title_full | Mu-tau reflection symmetry with a high scale texture-zero |
| title_fullStr | Mu-tau reflection symmetry with a high scale texture-zero |
| title_full_unstemmed | Mu-tau reflection symmetry with a high scale texture-zero |
| title_short | Mu-tau reflection symmetry with a high scale texture-zero |
| title_sort | mu tau reflection symmetry with a high scale texture zero |
| topic | Beyond Standard Model Neutrino Physics CP violation |
| url | http://link.springer.com/article/10.1007/JHEP09(2018)042 |
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