Probing KSVZ Axion Dark Matter near 5.9 GHz Using a 8-Cell Cavity Haloscope
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915373368999936 |
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| author | Ahn, Saebyeok Kutlu, Caglar Lee, Soohyung Youn, SungWoo Uchaikin, Sergey V. Bae, Sungjae Jeong, Junu van Loo, Arjan F. Nakamura, Yasunobu Oh, Seongjeong Kim, Jihn E. Semertzidis, Yannis K. |
| author_facet | Ahn, Saebyeok Kutlu, Caglar Lee, Soohyung Youn, SungWoo Uchaikin, Sergey V. Bae, Sungjae Jeong, Junu van Loo, Arjan F. Nakamura, Yasunobu Oh, Seongjeong Kim, Jihn E. Semertzidis, Yannis K. |
| contents | We report on a search for axion dark matter in the frequency range near 5.9 GHz, conducted using the haloscope technique. The experiment employed an 8-cell microwave resonator designed to extend the accessible frequency range by a multi-fold factor relative to conventional single-cell configurations, while maintaining a large detection volume. To enhance sensitivity, a flux-driven Josephson parametric amplifier (JPA) operating near the quantum noise limit was utilized, together with a sideband-summing method that coherently combines mirrored spectral components generated by the JPA. Data were acquired over the frequency range 5.83-5.94 GHz. With no statistically significant excess observed, we exclude axion-photon couplings $g_{aγγ}$ down to $1.2 \times 10^{-14}$ GeV$^{-1}$ at a 90% confidence level. The achieved sensitivity approaches the KSVZ benchmark prediction, setting the most stringent limits to date in this range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_04344 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing KSVZ Axion Dark Matter near 5.9 GHz Using a 8-Cell Cavity Haloscope Ahn, Saebyeok Kutlu, Caglar Lee, Soohyung Youn, SungWoo Uchaikin, Sergey V. Bae, Sungjae Jeong, Junu van Loo, Arjan F. Nakamura, Yasunobu Oh, Seongjeong Kim, Jihn E. Semertzidis, Yannis K. High Energy Physics - Experiment We report on a search for axion dark matter in the frequency range near 5.9 GHz, conducted using the haloscope technique. The experiment employed an 8-cell microwave resonator designed to extend the accessible frequency range by a multi-fold factor relative to conventional single-cell configurations, while maintaining a large detection volume. To enhance sensitivity, a flux-driven Josephson parametric amplifier (JPA) operating near the quantum noise limit was utilized, together with a sideband-summing method that coherently combines mirrored spectral components generated by the JPA. Data were acquired over the frequency range 5.83-5.94 GHz. With no statistically significant excess observed, we exclude axion-photon couplings $g_{aγγ}$ down to $1.2 \times 10^{-14}$ GeV$^{-1}$ at a 90% confidence level. The achieved sensitivity approaches the KSVZ benchmark prediction, setting the most stringent limits to date in this range. |
| title | Probing KSVZ Axion Dark Matter near 5.9 GHz Using a 8-Cell Cavity Haloscope |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.04344 |