Discriminating Dark Matter Origins with Directional Detection
Fuente:
arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866911505632460800 |
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| author | Bell, Nicole F. Lisotti, Chiara Newstead, Jayden L. O'Hare, Ciaran A. J. Ali, Iman Shaukat |
| author_facet | Bell, Nicole F. Lisotti, Chiara Newstead, Jayden L. O'Hare, Ciaran A. J. Ali, Iman Shaukat |
| contents | Scenarios where dark matter is boosted to relativistic velocities provide a promising probe of sub-GeV dark matter. Cosmic-ray upscattered and supernova-produced dark matter generate relativistic fluxes peaked toward the Galactic Centre, an anisotropy that offers a strong directional signature and is not mimicked by any terrestrial or cosmic background. We determine how many directional recoil events are required in a gas time-projection chamber to distinguish various scenarios for the origin of dark matter particles arriving in the solar system, which are otherwise indistinguishable without directionality. We find that standard halo dark matter particles can be distinguished from boosted populations with as few as $\mathcal{O}(20)$ events under reasonable track reconstruction performance and background conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_10434 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Discriminating Dark Matter Origins with Directional Detection Bell, Nicole F. Lisotti, Chiara Newstead, Jayden L. O'Hare, Ciaran A. J. Ali, Iman Shaukat High Energy Physics - Phenomenology Scenarios where dark matter is boosted to relativistic velocities provide a promising probe of sub-GeV dark matter. Cosmic-ray upscattered and supernova-produced dark matter generate relativistic fluxes peaked toward the Galactic Centre, an anisotropy that offers a strong directional signature and is not mimicked by any terrestrial or cosmic background. We determine how many directional recoil events are required in a gas time-projection chamber to distinguish various scenarios for the origin of dark matter particles arriving in the solar system, which are otherwise indistinguishable without directionality. We find that standard halo dark matter particles can be distinguished from boosted populations with as few as $\mathcal{O}(20)$ events under reasonable track reconstruction performance and background conditions. |
| title | Discriminating Dark Matter Origins with Directional Detection |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2603.10434 |