Fitting Simpson's neutrino into the standard model

Details Fitting Simpson's neutrino into the standard model Fitting Simpson's neutrino into the standard model

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phlb..159...49v&link_type=abstract

Physics Letters B, Volume 159, Issue 1, p. 49-56.

Physics

36

Scientific paper

I show how to accomodate the 17 keV state recently reported by Simpson as one of the neutrinos of the standard model. Experimental constraints can only be satisfied if the μ and τ neutrino combine to a very good approximation to form a Dirac neutrino of 17 keV leaving a light νe. Neutrino oscillations will provide the most stringent test of the model. The cosmological bounds are also satisfied in a natural way in models with Goldstone bosons. Explicit examples are given in the framework of majoron-type models. Constraints on the lepton symmetry breaking scale which follow from astrophysics, cosmology and laboratory experiments are discussed.
On leave from University of Brasilia, Brasilia, Brazil.

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