An Improved RF Cavity Search for Halo Axions

Abstract

The axion is a hypothetical elementary particle and cold dark matter candidate. In this RF cavity experiment, halo axions entering a resonant cavity immersed in a static magnetic field convert into microwave photons, with the resulting photons detected by a low-noise receiver. The ADMX Collaboration presents new limits on the axion-to-photon coupling and local axion dark matter halo mass density from a RF cavity axion search in the axion mass range 1.9-2.3 microeV, broadening the search range to 1.9-3.3 microeV. In addition, we report first results from an improved analysis technique.

5 pages, submitted to Physical Review D rapid communications

References in corpus (4)

• Results from a High-Sensitivity Search for Cosmic Axions
• The Local Halo Density
• The velocity peaks in the cold dark matter spectrum on Earth
• Experimental Constraints on the Axion Dark Matter Halo Density

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