Physics
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..185..171n&link_type=abstract
Physics Letters B, Volume 185, Issue 1-2, p. 171-176.
Physics
11
Scientific paper
We investigate in the framework of the triplet majoron model various additional physical manifestations which should occur if the recent suggestion of Bahcall, Petcov, Toshev and Valle that the electron neutrino decays into the muon neutrino and a majoron en route from the sun is indeed correct. We find no observable manifestation which could rule out this suggestion. Furthermore we show that the parameter chosen to make the decay lifetime of B8 neutrinos comparable with 500 s, the sun-earth transit time, is natural at least in the sense that much (100-1000 times) shorter life times can be ruled out. We observe that only decays νe --> νμ+X0, where the unobservable X0 carries two units of lepton number, avoid prohibitively large (> 99% branching) μ-->e+X0 transitions. This selects uniquely the triplet majoron model - or variants thereof - as the theoretical framework for decaying neutrinos.
I am grateful to F. Avignone, John Bahcall, C.W. Kim and David Spergel for very helpful discussions. This paper was supported by a grant # PHY 8217352.
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