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 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.
@article{arxiv.2012.10764,
title = {First Results from Axion Haloscope at CAPP around 10.7 $\mu$eV},
author = {Ohjoon Kwon and Doyu Lee and Woohyun Chung and Danho Ahn and HeeSu Byun and Fritz Caspers and Hyoungsoon Choi and Jihoon Choi and Yonuk Chung and Hoyong Jeong and Junu Jeong and Jihn E Kim and Jinsu Kim and Çağlar Kutlu and Jihnhwan Lee and MyeongJae Lee and Soohyung Lee and Andrei Matlashov and Seonjeong Oh and Seongtae Park and Sergey Uchaikin and SungWoo Youn and Yannis K. Semertzidis},
journal= {arXiv preprint arXiv:2012.10764},
year = {2021}
}