Results from a High-Sensitivity Search for Cosmic Axions
C. Hagmann, D. Kinion, W. Stoeffl, K. van Bibber, E. Daw, H. Peng, Leslie J Rosenberg, J. LaVeigne, P. Sikivie, N. Sullivan, D. Tanner, F. Nezrick, Michael S. Turner, D. Moltz, J. Powell, N. Golubev
Abstract
We report the first results of a high-sensitivity (10-23 Watt) search for light halo axions through their conversion to microwave photons. At 90 percent confidence we exclude a KSVZ axion of mass 2.9 x 10-6 eV to 3.3 x 10-6 eV as the dark matter in the halo of our Galaxy.
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