Neutrino mass spectrum and mixing from neutrino oscillation data

Details Neutrino mass spectrum and mixing from neutrino oscillation data Neutrino mass spectrum and mixing from neutrino oscillation data

1998-07-31

arxiv.org/abs/hep-ph/9807568v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages. Talk presented by S.M. Bilenky at the Ringberg Euroconference "New Trends in Neutrino Physics", 24-29 May 1998, Ring

Scientific paper

Two schemes of mixing of four massive neutrinos with two close neutrino masses separated by a gap of Delta m^2 about 1 eV^2 can accommodate solar, atmospheric and LSND neutrino oscillation data. It is shown that long-baseline nu(e)->nu(x) and nu(mu)->nu(e) transitions are strongly suppressed in these schemes. The scheme of mixing of three massive neutrinos with a mass hierarchy that can describe solar and atmospheric data is also discussed. It is shown that in this scheme the effective Majorana mass that characterizes the matrix element of neutrinoless double-beta decay is smaller than about 10^{-2} eV.

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