Dark population transfer mechanism for sterile neutrino dark matter
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866913238565781504 |
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| author | Fuller, George M. Gráf, Lukáš Patwardhan, Amol V. Spisak, Jacob |
| author_facet | Fuller, George M. Gráf, Lukáš Patwardhan, Amol V. Spisak, Jacob |
| contents | We present a mechanism for producing a cosmologically-significant relic density of one or more sterile neutrinos. This scheme invokes two steps: First, a population of "heavy" sterile neutrinos is created by scattering-induced decoherence of active neutrinos; Second, this population is transferred, via sterile neutrino self-interaction-mediated scatterings and decays, to one or more lighter mass ($\sim 10\,{\rm keV}$ to $\sim 1\,{\rm GeV}$) sterile neutrinos that are far more weakly (or not at all) mixed with active species and could constitute dark matter. Dark matter produced this way can evade current electromagnetic and structure-based bounds, but may nevertheless be probed by future observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_13878 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dark population transfer mechanism for sterile neutrino dark matter Fuller, George M. Gráf, Lukáš Patwardhan, Amol V. Spisak, Jacob High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We present a mechanism for producing a cosmologically-significant relic density of one or more sterile neutrinos. This scheme invokes two steps: First, a population of "heavy" sterile neutrinos is created by scattering-induced decoherence of active neutrinos; Second, this population is transferred, via sterile neutrino self-interaction-mediated scatterings and decays, to one or more lighter mass ($\sim 10\,{\rm keV}$ to $\sim 1\,{\rm GeV}$) sterile neutrinos that are far more weakly (or not at all) mixed with active species and could constitute dark matter. Dark matter produced this way can evade current electromagnetic and structure-based bounds, but may nevertheless be probed by future observations. |
| title | Dark population transfer mechanism for sterile neutrino dark matter |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2402.13878 |