Neutrinophilic Super-Resonant Dark Matter
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912700273000448 |
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| author | Abdughani, Murat Tang, Shao-Song Tursun, Kadirya Zhu, Bin |
| author_facet | Abdughani, Murat Tang, Shao-Song Tursun, Kadirya Zhu, Bin |
| contents | Dark matter (DM) annihilation can be significantly enhanced through narrow resonances or the Sommerfeld enhancement effect, with both mechanisms potentially combining in a super-resonant annihilation process. In such scenarios, the conventional assumption that kinetic equilibrium persists until chemical decoupling may not hold, leading to substantial impacts on the final DM relic density. However, a strongly enhanced annihilation cross section into Standard Model particles, except neutrinos, is constrained by cosmic microwave background observations. We thus investigate DM annihilation into neutrino pair final states, focusing on the role of kinetic decoupling. We solve the coupled Boltzmann equations to determine the relic density and constrain the parameter space using current experimental data, while also forecasting the sensitivity of future experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14491 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Neutrinophilic Super-Resonant Dark Matter Abdughani, Murat Tang, Shao-Song Tursun, Kadirya Zhu, Bin High Energy Physics - Phenomenology High Energy Astrophysical Phenomena Dark matter (DM) annihilation can be significantly enhanced through narrow resonances or the Sommerfeld enhancement effect, with both mechanisms potentially combining in a super-resonant annihilation process. In such scenarios, the conventional assumption that kinetic equilibrium persists until chemical decoupling may not hold, leading to substantial impacts on the final DM relic density. However, a strongly enhanced annihilation cross section into Standard Model particles, except neutrinos, is constrained by cosmic microwave background observations. We thus investigate DM annihilation into neutrino pair final states, focusing on the role of kinetic decoupling. We solve the coupled Boltzmann equations to determine the relic density and constrain the parameter space using current experimental data, while also forecasting the sensitivity of future experiments. |
| title | Neutrinophilic Super-Resonant Dark Matter |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2505.14491 |