An A4 Model for keV-Scale Sterile Neutrino Dark Matter
We develop an A4 × Z4 × Z2 symmetry model of neutrino masses and mixings within the minimal extended seesaw mechanism where three right-handed neutrinos νR1, νR2, and νR3 and a keV-scale singlet sterile neutrino S are added to the Standard Model. This model breaks μ-τ symmetry of the neutrino mass...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Andromeda Publishing and Academic Services
2023-02-01
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| Series: | Letters in High Energy Physics |
| Subjects: | |
| Online Access: | http://journals.andromedapublisher.com/index.php/LHEP/article/view/336 |
| _version_ | 1797893863724023808 |
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| author | Mayengbam Kishan Singh N. Nimai Singh |
| author_facet | Mayengbam Kishan Singh N. Nimai Singh |
| author_sort | Mayengbam Kishan Singh |
| collection | DOAJ |
| description |
We develop an A4 × Z4 × Z2 symmetry model of neutrino masses and mixings within the minimal extended
seesaw mechanism where three right-handed neutrinos νR1, νR2, and νR3 and a keV-scale singlet
sterile neutrino S are added to the Standard Model. This model breaks μ-τ symmetry of the neutrino mass
matrix and successfully explains leptonic mixing with nonzero θ13.We study the phenomenological results
of the keV-scale sterile neutrino as a dark matter candidate by calculating the relic abundance and its decay
rate to active neutrinos. Significant results are also observed for solar and atmospheric mixing angles
within the 3σ bounds, sum of the active neutrino masses (Σmi < 0.12 eV), and effective neutrino mass from
neutrinoless double beta decay, meff ∼ (0.001174–0.004367) eV for NH and meff ∼ (0.04766–0.05088) eV for
IH.
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| first_indexed | 2024-04-10T06:59:46Z |
| format | Article |
| id | doaj.art-a80c804a06e141239aba328bdd61c497 |
| institution | Directory Open Access Journal |
| issn | 2632-2714 |
| language | English |
| last_indexed | 2024-04-10T06:59:46Z |
| publishDate | 2023-02-01 |
| publisher | Andromeda Publishing and Academic Services |
| record_format | Article |
| series | Letters in High Energy Physics |
| spelling | doaj.art-a80c804a06e141239aba328bdd61c4972023-02-28T01:18:10ZengAndromeda Publishing and Academic ServicesLetters in High Energy Physics2632-27142023-02-012023110.31526/lhep.2023.336An A4 Model for keV-Scale Sterile Neutrino Dark MatterMayengbam Kishan Singh0N. Nimai SinghManipur University We develop an A4 × Z4 × Z2 symmetry model of neutrino masses and mixings within the minimal extended seesaw mechanism where three right-handed neutrinos νR1, νR2, and νR3 and a keV-scale singlet sterile neutrino S are added to the Standard Model. This model breaks μ-τ symmetry of the neutrino mass matrix and successfully explains leptonic mixing with nonzero θ13.We study the phenomenological results of the keV-scale sterile neutrino as a dark matter candidate by calculating the relic abundance and its decay rate to active neutrinos. Significant results are also observed for solar and atmospheric mixing angles within the 3σ bounds, sum of the active neutrino masses (Σmi < 0.12 eV), and effective neutrino mass from neutrinoless double beta decay, meff ∼ (0.001174–0.004367) eV for NH and meff ∼ (0.04766–0.05088) eV for IH. http://journals.andromedapublisher.com/index.php/LHEP/article/view/336Sterile neutrino, Dark matter, A4 model, Beyond standard model |
| spellingShingle | Mayengbam Kishan Singh N. Nimai Singh An A4 Model for keV-Scale Sterile Neutrino Dark Matter Letters in High Energy Physics Sterile neutrino, Dark matter, A4 model, Beyond standard model |
| title | An A4 Model for keV-Scale Sterile Neutrino Dark Matter |
| title_full | An A4 Model for keV-Scale Sterile Neutrino Dark Matter |
| title_fullStr | An A4 Model for keV-Scale Sterile Neutrino Dark Matter |
| title_full_unstemmed | An A4 Model for keV-Scale Sterile Neutrino Dark Matter |
| title_short | An A4 Model for keV-Scale Sterile Neutrino Dark Matter |
| title_sort | a4 model for kev scale sterile neutrino dark matter |
| topic | Sterile neutrino, Dark matter, A4 model, Beyond standard model |
| url | http://journals.andromedapublisher.com/index.php/LHEP/article/view/336 |
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