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First Results from the Taiwan Axion Search Experiment with Haloscope at 19.6 $\mu$eV

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arxiv 2205.05574 v2 pith:AJQIE7I6 submitted 2022-05-11 hep-ex physics.ins-det

classification hep-exphysics.ins-det
keywords experimentgammafirstsearchaxionhaloscopemassresults
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

This Letter reports on the first results from the Taiwan Axion Search Experiment with Haloscope, a search for axions using a microwave cavity at frequencies between 4.70750 and 4.79815 GHz. Apart from the non-axion signals, no candidates with a significance more than 3.355 were found. The experiment excludes models with the axion-two-photon coupling $\left|g_{a\gamma\gamma}\right|\gtrsim 8.2\times 10^{-14}$ GeV$^{-1}$, a factor of eleven above the benchmark KSVZ model, reaching a sensitivity three orders of magnitude better than any existing limits in the mass range 19.4687 < $m_a$ < 19.8436 $\mu$eV. It is also the first time that a haloscope-type experiment places constraints on $g_{a\gamma\gamma}$ in this mass region.

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Cited by 5 Pith papers

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