Lyman-$α$ limit on axion-like cold dark matter
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909532182020096 |
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| author | Xu, Zixuan Zheng, Sibo |
| author_facet | Xu, Zixuan Zheng, Sibo |
| contents | Using low redshift data on astrophysical reionization, we report new Lyman-$α$ limit on axion-like particle (ALP) as cold dark matter in ALP mass range of $m_{a}\sim 30-1000$ eV. Compared to the Leo T and soft-X ray bound, this limit is so far the most stringent in the ALP mass range of $m_{a}\sim 375-425$ eV and complementary in the ALP mass range otherwise. Combing these limits, we show new exclusion limits on $m_a$ for the ALP DM from either misalignment or freeze-in mechanism. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_15675 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Lyman-$α$ limit on axion-like cold dark matter Xu, Zixuan Zheng, Sibo High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Using low redshift data on astrophysical reionization, we report new Lyman-$α$ limit on axion-like particle (ALP) as cold dark matter in ALP mass range of $m_{a}\sim 30-1000$ eV. Compared to the Leo T and soft-X ray bound, this limit is so far the most stringent in the ALP mass range of $m_{a}\sim 375-425$ eV and complementary in the ALP mass range otherwise. Combing these limits, we show new exclusion limits on $m_a$ for the ALP DM from either misalignment or freeze-in mechanism. |
| title | Lyman-$α$ limit on axion-like cold dark matter |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2410.15675 |