An Improved RF Cavity Search for Halo Axions

Details An Improved RF Cavity Search for Halo Axions An Improved RF Cavity Search for Halo Axions

2003-10-01

arxiv.org/abs/astro-ph/0310042v1

Phys.Rev.D69:011101,2004

Astronomy and Astrophysics

Astrophysics

5 pages, submitted to Physical Review D rapid communications

Scientific paper

10.1103/PhysRevD.69.011101

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.

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