Results from a High-Sensitivity Search for Cosmic Axions
/ Authors
C. Hagmann, D. Kinion, W. Stoeffl, K. Bibber, E. Daw, H. Peng, L. Rosenberg, J. Laveigne, P. Sikivie, N. Sullivan
and 7 more authors
D. Tanner, F. Nezrick, M. Turner, M. Turner, D. Moltz, J. Powell, N. Golubev
/ Abstract
We report the first results of a high-sensitivity $(\ensuremath{\sim}{10}^{\ensuremath{-}23}\mathrm{W})$ search for light halo axions through their conversion to microwave photons. At the 90% confidence level, we exclude a Kim-Shifman-Vainshtein-Zakharov axion of mass $2.9\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ to $3.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}\mathrm{eV}$ as the dark matter in the halo of our galaxy.
Journal: Physical Review Letters