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First Results from Axion Haloscope at CAPP around 10.7 μeV

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arxiv 2012.10764 v3 pith:IIBLW3XM submitted 2020-12-19 hep-ex

First Results from Axion Haloscope at CAPP around 10.7 μeV

classification hep-ex
keywords axionfirstcouplingrangetemperaturearoundbasiccapp
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 $\mu$eV with near Kim-Shifman-Vainshtein-Zakharov (KSVZ) coupling sensitivity and the range 10.16$-$11.37 $\mu$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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