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Search for Axion dark matter with the QUAX-LNF tunable haloscope (2402.19063v3)

Published 29 Feb 2024 in physics.ins-det, astro-ph.CO, and hep-ex

Abstract: We report the first experimental results obtained with the new haloscope of the QUAX experiment located at Laboratori Nazionali di Frascati of INFN (LNF). The haloscope is composed of a OFHC Cu resonant cavity cooled down to about 30 mK and immersed in a magnetic field of 8 T. The cavity frequency was varied in a 6 MHz range between 8.831496 and 8.83803 GHz. This corresponds to a previously unprobed mass range between 36.52413 and 36.5511 $\mu$eV. We don't observe any excess in the power spectrum and set limits on the axion-photon coupling in this mass range down to $g_{a\gamma\gamma} < 0.861 \times 10{-13}$ GeV${-1}$ with the confidence level set at $90\%$.

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