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First Results from the Taiwan Axion Search Experiment with a Haloscope at 19.6 μeV
Hsin Chang1, Jing-Yang Chang1, Yi-Chieh Chang2
1Department of Physics, National Central University, Taoyuan City 320317, Taiwan.
Abstract:
This Letter reports on the first results from the Taiwan Axion Search Experiment with a Haloscope, a search for axions using a microwave cavity at frequencies between 4.707 50 and 4.798 15 GHz. Apart from the nonaxion signals, no candidates with a significance of more than 3.355 were found. The experiment excludes models with the axion-two-photon coupling |g_{aγγ}|≳8.1×10^{-14} GeV^{-1}, a factor of eleven above the benchmark Kim-Shifman-Vainshtein-Zakharov model, in the mass range 19.4687
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