Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-07-19
Eur.Phys.J.C1:247-253,1998
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex2e file, 13 pages including 2 figures. Postscript also available at http://www.to.infn.it/teorici/giunti/papers.html
Scientific paper
All the possible schemes of neutrino mixing with four massive neutrinos inspired by the existing experimental indications in favor of neutrino mixing are considered in a model independent way. Assuming that in short-baseline experiments only one mass-squared difference is relevant, it is shown that the scheme with a neutrino mass hierarchy is not compatible with the experimental results. Only two schemes with two pairs of neutrinos with close masses separated by a mass difference of the order of 1 eV are in agreement with the results of all experiments. One of these schemes leads to possibly observable effects in Tritium and neutrinoless double-beta decay experiments.
Bilenky Samoil M.
Giunti Carlo
Grimus Walter
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