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An Improved RF Cavity Search for Halo Axions

S. J. Asztalos·R. F. Bradley·L. Duffy·C. Hagmann·D. Kinion·D. M. Moltz·L. J Rosenberg·P. Sikivie·W. Stoeffl·N. S. Sullivan·D. B. Tanner·K. van Bibber·D. B. Yu
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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.

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S. J. Asztalos, R. F. Bradley, L. Duffy, C. Hagmann, D. Kinion, D. M. Moltz, L. J Rosenberg, P. Sikivie, W. Stoeffl, N. S. Sullivan, D. B. Tanner, K. van Bibber, D. B. Yu. 2003-10-01. An Improved RF Cavity Search for Halo Axions. https://doi.org/10.1103/physrevd.69.011101

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