Non-thermal Dark Matter in $U(1)_{B-L}$ Extension of Inert Doublet Model
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910898718769152 |
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| author | Binjonaid, Maien Elsheshtawy, Ahmed Khalil, Shaaban |
| author_facet | Binjonaid, Maien Elsheshtawy, Ahmed Khalil, Shaaban |
| contents | We propose an extension of the Inert Doublet Model (IDM) that explains both neutrino masses and dark matter (DM) in the intermediate-mass range by incorporating a $U(1)_{B-L}$ gauge symmetry. This additional symmetry enables the inclusion of right-handed neutrinos, providing a natural mechanism for neutrino mass generation. While the CP-even component of the inert doublet can serve as a DM candidate, its thermal relic abundance is insufficient to match the observed DM density. To address this, we introduce a non-thermal production mechanism, where a heavy scalar associated with the $U(1)_{B-L}$ symmetry decays into the inert doublet scalar, yielding a viable relic abundance at low reheating temperatures. We also examine both direct and indirect detection prospects for this DM candidate and assess the model against current experimental constraints. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_07787 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-thermal Dark Matter in $U(1)_{B-L}$ Extension of Inert Doublet Model Binjonaid, Maien Elsheshtawy, Ahmed Khalil, Shaaban High Energy Physics - Phenomenology High Energy Physics - Theory We propose an extension of the Inert Doublet Model (IDM) that explains both neutrino masses and dark matter (DM) in the intermediate-mass range by incorporating a $U(1)_{B-L}$ gauge symmetry. This additional symmetry enables the inclusion of right-handed neutrinos, providing a natural mechanism for neutrino mass generation. While the CP-even component of the inert doublet can serve as a DM candidate, its thermal relic abundance is insufficient to match the observed DM density. To address this, we introduce a non-thermal production mechanism, where a heavy scalar associated with the $U(1)_{B-L}$ symmetry decays into the inert doublet scalar, yielding a viable relic abundance at low reheating temperatures. We also examine both direct and indirect detection prospects for this DM candidate and assess the model against current experimental constraints. |
| title | Non-thermal Dark Matter in $U(1)_{B-L}$ Extension of Inert Doublet Model |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2411.07787 |