Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-04-08
Phys.Lett.B456:194-200,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, Latex2.09, uses epsf.sty, 4 postscript figures
Scientific paper
10.1016/S0370-2693(99)00514-6
When three Majorana neutrinos describe the solar and atmospheric neutrino data via oscillations, a nonzero measurement of neutrinoless double beta ($0\nu\beta\beta$) decay can determine the sum of neutrino masses $\sum m_\nu$ if the solar solution has small-angle mixing, and place a lower bound on $\sum m_\nu$ for large-angle solar mixing. If in addition a nonzero $\sum m_\nu$ is deduced from cosmology, the neutrino mass spectrum may be uniquely specified for some ranges of neutrino parameters. For $\sum m_\nu > 0.75$ eV, the small-angle solar solution is excluded by the current upper limit on neutrinoless double beta decay. In models with maximal solar mixing the $CP$ phases of the neutrinos may be strongly constrained by stringent upper bounds on $0\nu\beta\beta$ decay.
Barger Vernon
Whisnant Kerry
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