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Axion decay of a 17-keV neutrino
Abstract
A 17-keV particle tentatively observed in decays is assumed to be a new Dirac-type neutrino. Coupling to the Higgs sector of the Dine-Fischter- Srednicki-Zhitnitsky (DFSZ) axion model provides a mass for this particle, its mixing with the electron neutrino, and a channel for a reasonably fast decay into an electron neutrino and the light DFSZ axion. Results are consistent with most laboratory, astrophysical, and cosmological limits on the properties of this particle and of the axion. © 1991 The American Physical Society.
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