Article

Results of a laboratory search for cosmic axions and other weakly coupled light particles

Walter WuenschDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627S. De Panfilis-WuenschDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627Yannis K. SemertzidisDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627J. RogersDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627A. C. MelissinosDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627H. J. HalamaDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627B. MoskowitzDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627A. ProdellDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627W. B. FowlerDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627F. A. NezrickDepartment of Physics and Astronomy, University of Rochester, Rochester, New York 14627

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Abstract

A microwave cavity experiment designed to search for the signal from cosmic axions converting in an external magnetic field covered the mass range (4.5-16.3)\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}6}$ eV, corresponding to the frequency range from 1.09 to 3.93 GHz. Upper limits on the coupling and abundance of nonrelativistic galactic axions have been measured; these limits yield a coupling which is 1-2 orders of magnitude higher than that predicted by the Dine-Fischler-Srednicki model. Also presented are limits on axions with a continuum spectrum, limits on the presence of a wide axion line at the frequency of the 21-cm hydrogen emission line, and limits on the production of pseudoscalar particles by photons in the cavity interacting with the magnetic field.

Identifiers

DOI: 10.1103/physrevd.40.3153

Citations and references

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