Torsion Balance Experiments Enable Direct Detection of Sub-eV Dark Matter
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866911551690113024 |
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| author | Matsumoto, Shigeki Sheng, Jie Xing, Chuan-Yang Zhu, Lin |
| author_facet | Matsumoto, Shigeki Sheng, Jie Xing, Chuan-Yang Zhu, Lin |
| contents | Light dark matter with sub-eV masses has a high number density in our galaxy, and its scattering cross section with macroscopic objects can be significantly enhanced by coherence effects. Repeated scattering with a target object can induce a measurable acceleration. Torsion balance experiments with geometric asymmetry are, in principle, capable of detecting such signals. Our analysis shows that existing torsion balances designed to test the Equivalence Principle already place the most stringent constraints on DM-nucleon scattering in the $(10^{-2}, 1)\,$eV mass range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_07763 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Torsion Balance Experiments Enable Direct Detection of Sub-eV Dark Matter Matsumoto, Shigeki Sheng, Jie Xing, Chuan-Yang Zhu, Lin High Energy Physics - Phenomenology High Energy Physics - Experiment Light dark matter with sub-eV masses has a high number density in our galaxy, and its scattering cross section with macroscopic objects can be significantly enhanced by coherence effects. Repeated scattering with a target object can induce a measurable acceleration. Torsion balance experiments with geometric asymmetry are, in principle, capable of detecting such signals. Our analysis shows that existing torsion balances designed to test the Equivalence Principle already place the most stringent constraints on DM-nucleon scattering in the $(10^{-2}, 1)\,$eV mass range. |
| title | Torsion Balance Experiments Enable Direct Detection of Sub-eV Dark Matter |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2506.07763 |