Flavor Imprints on Novel Low Mass Dark Matter
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866911282266898432 |
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| author | Kumar, Ranjeet Prajapati, Hemant Kumar Srivastava, Rahul Yadav, Sushant |
| author_facet | Kumar, Ranjeet Prajapati, Hemant Kumar Srivastava, Rahul Yadav, Sushant |
| contents | We present a Majorana scotogenic-like loop framework in which neutrino mass generation and dark matter stability are intrinsically connected to the breaking of the discrete flavor symmetry $A_4$. This breaking leads to the emergence of the scoto-seesaw mechanism and a $Z_2$ symmetry. This naturally explains the solar and atmospheric mass-squared differences, $Δm_{sol}^{2}$ and $Δm_{atm}^{2}$, while simultaneously ensuring dark matter stability. Our model accommodates normal ordering of neutrino masses, with a generalized $μ$-$τ$ reflection symmetry shaping the structure of leptonic mixing and a lower limit on the lightest neutrino mass. Moreover, the model provides predictions for the octant of $θ_{23}$ and a strong correlation between $Δm_{sol}^{2}$ and $Δm_{atm}^{2}$. This correlation puts a lower bound on the fermionic DM mass. In contrast, scalar dark matter remains viable over a broad mass spectrum. A notable feature is that the low mass regime ($\sim 15$ GeV onwards) survives owing to the presence of efficient co-annihilation channels, which are typically absent in the Majorana scotogenic scenario. Additionally, the model aligns with current and future limits from lepton flavor violation experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_02972 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Flavor Imprints on Novel Low Mass Dark Matter Kumar, Ranjeet Prajapati, Hemant Kumar Srivastava, Rahul Yadav, Sushant High Energy Physics - Phenomenology We present a Majorana scotogenic-like loop framework in which neutrino mass generation and dark matter stability are intrinsically connected to the breaking of the discrete flavor symmetry $A_4$. This breaking leads to the emergence of the scoto-seesaw mechanism and a $Z_2$ symmetry. This naturally explains the solar and atmospheric mass-squared differences, $Δm_{sol}^{2}$ and $Δm_{atm}^{2}$, while simultaneously ensuring dark matter stability. Our model accommodates normal ordering of neutrino masses, with a generalized $μ$-$τ$ reflection symmetry shaping the structure of leptonic mixing and a lower limit on the lightest neutrino mass. Moreover, the model provides predictions for the octant of $θ_{23}$ and a strong correlation between $Δm_{sol}^{2}$ and $Δm_{atm}^{2}$. This correlation puts a lower bound on the fermionic DM mass. In contrast, scalar dark matter remains viable over a broad mass spectrum. A notable feature is that the low mass regime ($\sim 15$ GeV onwards) survives owing to the presence of efficient co-annihilation channels, which are typically absent in the Majorana scotogenic scenario. Additionally, the model aligns with current and future limits from lepton flavor violation experiments. |
| title | Flavor Imprints on Novel Low Mass Dark Matter |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.02972 |