Search for invisible axion dark matter of mass m${}_a=43\mu$eV with the QUAX--$a\gamma$ experiment

D. Alesini, C. Braggio, G. Carugno +17

A haloscope of the QUAX--$a\gamma$ experiment composed of an oxygen-free high thermal conductivity-Cu cavity inside an 8.1 T magnet and cooled to $\sim 200$ mK is put in operation for th…