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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/2511.14851 |
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| _version_ | 1866915626039115776 |
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| author | Liu, Shengyi Lyu, Kun-Feng Meng, Jie Shu, Jing Wang, Yakun Zhao, Yue |
| author_facet | Liu, Shengyi Lyu, Kun-Feng Meng, Jie Shu, Jing Wang, Yakun Zhao, Yue |
| contents | We propose using the ultra-narrow 88 keV Mössbauer transition in $^{109}$Ag to search for QCD axion dark matter. The sub-eV axion field oscillates coherently, inducing a time-varying effective $\barθ_{\rm QCD}$ angle. This, in turn, modulates the nuclear binding energy. From existing linewidth measurements, we derive constraints on the $f_a^{-1}$-$m_a$ plane that already surpass other laboratory bounds. We further detail an experimental setup to directly probe this time-dependent signature via precision Mössbauer spectroscopy in the gravitational potential. This Letter demonstrates that this approach can significantly extend search capability and probe a vast, unexplored region of axion parameter space. Particularly, this setup can probe axion masses beyond the reach of existing experiments, such as atomic-clock measurements, offering a powerful new way for exploring higher-mass axion dark matter. The sensitivity has the potential to be further improved with advancing experimental capabilities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_14851 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing Axion via Mössbauer Spectroscopy Liu, Shengyi Lyu, Kun-Feng Meng, Jie Shu, Jing Wang, Yakun Zhao, Yue High Energy Physics - Phenomenology Nuclear Experiment We propose using the ultra-narrow 88 keV Mössbauer transition in $^{109}$Ag to search for QCD axion dark matter. The sub-eV axion field oscillates coherently, inducing a time-varying effective $\barθ_{\rm QCD}$ angle. This, in turn, modulates the nuclear binding energy. From existing linewidth measurements, we derive constraints on the $f_a^{-1}$-$m_a$ plane that already surpass other laboratory bounds. We further detail an experimental setup to directly probe this time-dependent signature via precision Mössbauer spectroscopy in the gravitational potential. This Letter demonstrates that this approach can significantly extend search capability and probe a vast, unexplored region of axion parameter space. Particularly, this setup can probe axion masses beyond the reach of existing experiments, such as atomic-clock measurements, offering a powerful new way for exploring higher-mass axion dark matter. The sensitivity has the potential to be further improved with advancing experimental capabilities. |
| title | Probing Axion via Mössbauer Spectroscopy |
| topic | High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2511.14851 |