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arXiv · 2012.10764

First Results from Axion Haloscope at CAPP around 10.7 $μ$eV

Ohjoon Kwon·Doyu Lee·Woohyun Chung·Danho Ahn·HeeSu Byun·Fritz Caspers·Hyoungsoon Choi·Jihoon Choi·Yonuk Chung·Hoyong Jeong·Junu Jeong·Jihn E Kim·Jinsu Kim·Çağlar Kutlu·Jihnhwan Lee·MyeongJae Lee·Soohyung Lee·Andrei Matlashov·Seonjeong Oh·Seongtae Park·Sergey Uchaikin·SungWoo Youn·Yannis K. Semertzidis
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Abstract

The Center for Axion and Precision Physics research at the Institute for Basic Science is searching for axion dark matter using ultra-low temperature microwave resonators. We report the exclusion of the axion mass range 10.7126$-$10.7186 $μ$eV with near Kim-Shifman-Vainshtein-Zakharov (KSVZ) coupling sensitivity and the range 10.16$-$11.37 $μ$eV with about 9 times larger coupling at 90$\%$ confidence level. This is the first axion search result in these ranges. It is also the first with a resonator physical temperature of less than 40 mK.

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Ohjoon Kwon, Doyu Lee, Woohyun Chung, Danho Ahn, HeeSu Byun, Fritz Caspers, Hyoungsoon Choi, Jihoon Choi, Yonuk Chung, Hoyong Jeong, Junu Jeong, Jihn E Kim, Jinsu Kim, Çağlar Kutlu, Jihnhwan Lee, MyeongJae Lee, Soohyung Lee, Andrei Matlashov, Seonjeong Oh, Seongtae Park, Sergey Uchaikin, SungWoo Youn, Yannis K. Semertzidis. 2021-04-28. First Results from Axion Haloscope at CAPP around 10.7 $μ$eV. https://doi.org/10.1103/physrevlett.126.191802

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