First Results from an Axion Haloscope at CAPP around 10.7 μeV
Ohjoon Kwon1, Doyu Lee1, Woohyun Chung1
1Center for Axion and Precision Physics Research (CAPP), IBS, Daejeon 34051, Republic of Korea.
Abstract:
The Center for Axion and Precision Physics Research at the Institute for Basic Science is searching for axion dark matter using ultralow temperature microwave resonators. We report the exclusion of the axion mass range 10.7126-10.7186 μeV with near Kim-Shifman-Vainshtein-Zakharov (KSVZ) coupling sensitivity and the range 10.16-11.37 μeV 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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