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. 2025 Mar 21;134(11):111002.
doi: 10.1103/PhysRevLett.134.111002.

ADMX Axion Dark Matter Bounds around 3.3 μeV with Dine-Fischler-Srednicki-Zhitnitsky Discovery Ability

Affiliations

ADMX Axion Dark Matter Bounds around 3.3 μeV with Dine-Fischler-Srednicki-Zhitnitsky Discovery Ability

C Goodman et al. Phys Rev Lett. .

Abstract

We report the results of a QCD axion dark matter search with discovery ability for Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axions using an axion haloscope. Sub-Kelvin noise temperatures are reached with an ultralow noise Josephson parametric amplifier cooled by a dilution refrigerator. This work excludes (with a 90% confidence level) DFSZ axions with masses between 3.27 to 3.34 μeV, assuming a standard halo model with a local energy density of 0.45 GeV/cm^{3} made up 100% of axions.

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