Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework
Abstract To understand the observed pattern of neutrino masses and mixing as well as to account for the dark matter we propose a hybrid scoto-seesaw model based on the A 4 discrete flavor symmetry. In this setup, including at least two heavy right-handed neutrinos is essential to employ the discrete...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP11(2022)074 |
| _version_ | 1797865649800740864 |
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| author | Joy Ganguly Janusz Gluza Biswajit Karmakar |
| author_facet | Joy Ganguly Janusz Gluza Biswajit Karmakar |
| author_sort | Joy Ganguly |
| collection | DOAJ |
| description | Abstract To understand the observed pattern of neutrino masses and mixing as well as to account for the dark matter we propose a hybrid scoto-seesaw model based on the A 4 discrete flavor symmetry. In this setup, including at least two heavy right-handed neutrinos is essential to employ the discrete flavor symmetry that mimics once popular tribimaximal neutrino mixing at the leading order via type-I seesaw. The scotogenic contribution then acts as a critical deviation to reproduce the observed value of the reactor mixing angle θ 13 (within the trimaximal mixing scheme) and to accommodate potential dark matter candidates, pointing towards a common origin of θ 13 and dark matter. The model predicts the atmospheric angle to be in the upper octant, excludes some regions on the Dirac CP phase, and restricts the Majorana phases too. Further, normal and inverted mass hierarchies can be distinguished for specific values of the relative phases associated with the complex light neutrino mass matrix. Owing to the considered flavor symmetry, contributions coming from the scotogenic mechanism towards the lepton flavor violating decays such as μ → eγ, τ → eγ vanish, and a lower limit on the second right-handed neutrino mass can be obtained. Prediction for the effective mass parameter appearing in the neutrinoless double beta decay falls within the sensitivity of future experiments such as LEGEND-1k and nEXO. |
| first_indexed | 2024-04-09T23:12:40Z |
| format | Article |
| id | doaj.art-0d868f3c298b4182ba0fbb89cfb4c4f5 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T23:12:40Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-0d868f3c298b4182ba0fbb89cfb4c4f52023-03-22T10:16:31ZengSpringerOpenJournal of High Energy Physics1029-84792022-11-0120221114010.1007/JHEP11(2022)074Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw frameworkJoy Ganguly0Janusz Gluza1Biswajit Karmakar2Department of Physics, Indian Institute of Technology HyderabadInstitute of Physics, University of SilesiaInstitute of Physics, University of SilesiaAbstract To understand the observed pattern of neutrino masses and mixing as well as to account for the dark matter we propose a hybrid scoto-seesaw model based on the A 4 discrete flavor symmetry. In this setup, including at least two heavy right-handed neutrinos is essential to employ the discrete flavor symmetry that mimics once popular tribimaximal neutrino mixing at the leading order via type-I seesaw. The scotogenic contribution then acts as a critical deviation to reproduce the observed value of the reactor mixing angle θ 13 (within the trimaximal mixing scheme) and to accommodate potential dark matter candidates, pointing towards a common origin of θ 13 and dark matter. The model predicts the atmospheric angle to be in the upper octant, excludes some regions on the Dirac CP phase, and restricts the Majorana phases too. Further, normal and inverted mass hierarchies can be distinguished for specific values of the relative phases associated with the complex light neutrino mass matrix. Owing to the considered flavor symmetry, contributions coming from the scotogenic mechanism towards the lepton flavor violating decays such as μ → eγ, τ → eγ vanish, and a lower limit on the second right-handed neutrino mass can be obtained. Prediction for the effective mass parameter appearing in the neutrinoless double beta decay falls within the sensitivity of future experiments such as LEGEND-1k and nEXO.https://doi.org/10.1007/JHEP11(2022)074Flavour SymmetriesTheories of FlavourCP Violation |
| spellingShingle | Joy Ganguly Janusz Gluza Biswajit Karmakar Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework Journal of High Energy Physics Flavour Symmetries Theories of Flavour CP Violation |
| title | Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework |
| title_full | Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework |
| title_fullStr | Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework |
| title_full_unstemmed | Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework |
| title_short | Common origin of θ 13 and dark matter within the flavor symmetric scoto-seesaw framework |
| title_sort | common origin of θ 13 and dark matter within the flavor symmetric scoto seesaw framework |
| topic | Flavour Symmetries Theories of Flavour CP Violation |
| url | https://doi.org/10.1007/JHEP11(2022)074 |
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