Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-04-04
Phys.Lett.B392:413,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, latex. Title and text have been modified. Confusing discussions have been corrected. A version to be published in Ph
Scientific paper
10.1016/S0370-2693(96)01588-2
We study a consistent explanation for both deficits of solar neutrino and atmospheric neutrino due to the neutrino oscillation induced by the mixing of light neutrinos with a heavy right-handed neutrino. We propose such a phenomenological neutrino mass matrix that realizes this scenario in the simple three generation left- and right- handed neutrino framework. Although this model contains only one nonzero mass eigenvalue $\sim$ 10 eV for these light neutrino states at the first approximation level, it can be expected to explain consistently both deficiency due to the appropriate higher order corrections. A suitable hot dark matter candidate is naturally included in it as its own feature.
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