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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.15282 |
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| _version_ | 1866915164905799680 |
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| author | Geng, X. P. Zhong, B. Zhang, Z. H. |
| author_facet | Geng, X. P. Zhong, B. Zhang, Z. H. |
| contents | The search for the absorption of fermionic dark matter (DM) on electron is hindered by a partial or complete loss of sensitivity for the mass of DM ($m_χ$) below $\mathcal{O} (10)$ keV. We introduce a novel search using a small but high-energy portion of DM boosted by cosmic rays, and the loss of sensitivity is circumvented because the subsequent absorption within the detector imparts to the target electron not only $m_χ$ but also substantial $T_χ$. The one-sided 90\% confidence level constraints on ($σ_e v_χ$) are derived with the XENONnT public dataset for $m_χ$ $\in$ (1$\times$10$^{-5}$--1) keV which has not been explored yet. Our results have placed constraints on DM at the lowest $m_χ$ currently achievable among the DMDD experiments utilizing ionizing signals from DM interactions within the detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_15282 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Novel Search for absorption of ultra-light fermionic dark matter on electron with cosmic ray boost Geng, X. P. Zhong, B. Zhang, Z. H. High Energy Physics - Phenomenology High Energy Physics - Experiment The search for the absorption of fermionic dark matter (DM) on electron is hindered by a partial or complete loss of sensitivity for the mass of DM ($m_χ$) below $\mathcal{O} (10)$ keV. We introduce a novel search using a small but high-energy portion of DM boosted by cosmic rays, and the loss of sensitivity is circumvented because the subsequent absorption within the detector imparts to the target electron not only $m_χ$ but also substantial $T_χ$. The one-sided 90\% confidence level constraints on ($σ_e v_χ$) are derived with the XENONnT public dataset for $m_χ$ $\in$ (1$\times$10$^{-5}$--1) keV which has not been explored yet. Our results have placed constraints on DM at the lowest $m_χ$ currently achievable among the DMDD experiments utilizing ionizing signals from DM interactions within the detectors. |
| title | Novel Search for absorption of ultra-light fermionic dark matter on electron with cosmic ray boost |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2502.15282 |