Boosted dark matter from semi-annihilations in the galactic center
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866915231066750976 |
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| author | Kamenetskaia, Boris Betancourt Fujiwara, Motoko Ibarra, Alejandro Toma, Takashi |
| author_facet | Kamenetskaia, Boris Betancourt Fujiwara, Motoko Ibarra, Alejandro Toma, Takashi |
| contents | In some scenarios, the dark matter relic abundance is set by the semi-annihilation of two dark matter particles into one dark matter particle and one Standard Model particle. These semi-annihilations might still be occurring today in the Galactic Center at a significant rate, generating a flux of boosted dark matter particles. We investigate the possible signals of this flux component in direct detection and neutrino experiments for sub-GeV dark matter masses. We show that for typical values of the semi-annihilation cross-section, the sensitivity of current experiments to the spin-independent dark matter-proton scattering cross-section can be several orders of magnitude larger than current constraints from cosmic-ray boosted dark matter. We also argue that the upcoming DARWIN and DUNE experiments may probe scattering cross-sections as low as $10^{-37}\,{\rm cm}^2$ for masses between 30 MeV and 1 GeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_12117 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Boosted dark matter from semi-annihilations in the galactic center Kamenetskaia, Boris Betancourt Fujiwara, Motoko Ibarra, Alejandro Toma, Takashi High Energy Physics - Phenomenology In some scenarios, the dark matter relic abundance is set by the semi-annihilation of two dark matter particles into one dark matter particle and one Standard Model particle. These semi-annihilations might still be occurring today in the Galactic Center at a significant rate, generating a flux of boosted dark matter particles. We investigate the possible signals of this flux component in direct detection and neutrino experiments for sub-GeV dark matter masses. We show that for typical values of the semi-annihilation cross-section, the sensitivity of current experiments to the spin-independent dark matter-proton scattering cross-section can be several orders of magnitude larger than current constraints from cosmic-ray boosted dark matter. We also argue that the upcoming DARWIN and DUNE experiments may probe scattering cross-sections as low as $10^{-37}\,{\rm cm}^2$ for masses between 30 MeV and 1 GeV. |
| title | Boosted dark matter from semi-annihilations in the galactic center |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2501.12117 |