Search for Solar Axions Using Fe-57

Abstract

We have made a search for Fe-57 gamma rays of energy 14.4 keV induced by resonant absorption of monochromatic solar axions, as proposed by Moriyama. The proposed axions are suggested to be emitted from the Sun, in M1 transitions between the first, thermally excited state and the ground state of Fe-57. An upper limit on hadronic axion mass of 745 eV is obtained at the 95% confidence level, it being assumed that z=0.56 and S=0.5.

arXiv comment4 pages, latex, revtex source, 1 postscript figure included, Title revised, some references added and expanded discussion. Version accepted by Phys. Lett. B

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