Axion Dark Matter Search around <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>4.55</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi mathvariant="normal">μ</mml:mi><mml:mi>eV</mml:mi></mml:mrow></mml:math> with Dine-Fischler-Srednicki-Zhitnitskii Sensitivity
Andrew K. Yi, Saebyeok Ahn, Çağlar Kutlu, JinMyeong Kim, B. R. Ko, B. I. Ivanov, HeeSu Byun, Arjan F. van Loo, SeongTae Park, J. H. Jeong, Ohjoon Kwon, Yasunobu Nakamura, S. Uchaikin, J. Choi, Soohyung Lee, M. J. Lee, Yun Chang Shin, Jinsu Kim, Doyu Lee, Danho Ahn, Sungjae Bae, Jiwon Lee, Young-Geun Kim, Violeta Gkika, Ki Woong Lee, Seonjeong Oh, Taehyeon Seong, Dongmin Kim, Woohyun Chung, Andrei Matlashov, SungWoo Youn, Yannis K. Semertzidis
Abstract
We report an axion dark matter search at Dine-Fischler-Srednicki-Zhitnitskii sensitivity with the CAPP-12TB haloscope, assuming axions contribute 100% of the local dark matter density. The search excluded the axion-photon coupling ${g}_{a\ensuremath{\gamma}\ensuremath{\gamma}}$ down to about $6.2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}16}\text{ }\text{ }{\mathrm{GeV}}^{\ensuremath{-}1}$ over the axion mass range between 4.51 and $4.59\text{ }\text{ }\mathrm{\ensuremath{\mu}}\mathrm{eV}$ at a 90% confidence level. The achieved experimental sensitivity can also exclude Kim-Shifman-Vainshtein-Zakharov axion dark matter that makes up just 13% of the local dark matter density. The CAPP-12TB haloscope will continue the search over a wide range of axion masses.