### Atmospheric and Solar neutrinos in the light of the SuperKamiokande resultsAtmospheric and Solar neutrinos in the light of the SuperKamiokande results

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 Author Barbieri, Riccardo Source arXiv.org Content type Text File Format PDF Date of Submission 1999-01-07 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword High Energy Physics - Phenomenology ♦ physics:hep-ph Abstract The hierarchy $\Delta m^2_{atm} \gg \Delta m^2_\odot$ and the large $\theta_{23}$ mixing angle, as suggested by neutrino oscillation experiments, can be accounted for by a variety of lepton flavour models. A dichotomy emerges: i) Models were all neutrino masses are bounded by $m_{atm}\equiv (\Delta m^2_{atm})^{1/2}\approx 0.03 eV$; ii) Models of quasi-degenerate neutrinos. It is shown how these different patterns of neutrino masses may arise from different lepton flavour symmetries. Physical implications are discussed in the various cases. Educational Use Research Learning Resource Type Article Page Count 8