Search for "Invisible" Axion Dark Matter in the 3.3-4.2~μeV Mass Range

2021/10/31 by ADMX Collaboration, C. Bartram, T. Braine +49 · 4 citations
Physics and Astronomy · #hep-ex #astro-ph.CO #physics.ins-det

paper · pdf · doi:10.1103/physrevlett.127.261803

published as Phys. Rev. Lett. 127, 261803 (2021) · 6 pages, 5 figures

arxiv created 2021/12/29 · arxiv updated 2021/12/30

Abstract

We report the results from a haloscope search for axion dark matter in the 3.3-4.2~μeV mass range. This search excludes the axion-photon coupling predicted by one of the benchmark models of "invisible" axion dark matter, the KSVZ model. This sensitivity is achieved using a large-volume cavity, a superconducting magnet, an ultra low noise Josephson parametric amplifier, and sub-Kelvin temperatures. The validity of our detection procedure is ensured by injecting and detecting blind synthetic axion signals.

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