Doublet-singlet oscillations and dark matter neutrinos

Details Doublet-singlet oscillations and dark matter neutrinos Doublet-singlet oscillations and dark matter neutrinos

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phlb..389..687o&link_type=abstract

Physics Letters B, Volume 389, Issue 4, p. 687-692.

Physics

2

Scientific paper

We examine the ``singlet majoron mode'' first introduced by Chikashige, Mohapatra and Peccei as a simple extension of the standard model with massive Majorana neutrinos. We can explain both the solar and the atmospheric neutrino deficits by the oscillations between electroweak doublet and singlet neutrinos without flavor mixing. Furthermore, while some light neutrinos can be the hot dark matter, tau neutrino with mass of 8.9-24 MeV can be the cold dark matter through the interaction with the majoron. Thus, we can simultaneously explain the solar neutrino deficit, the atmospheric neutrino anomally, and the cold and hot dark matters only with the Majorana neutrinos.

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