Schemes of neutrino mixing from the results of neutrino oscillation experiments

Details Schemes of neutrino mixing from the results of neutrino oscillation experiments Schemes of neutrino mixing from the results of neutrino oscillation experiments

1997-07-17

arxiv.org/abs/hep-ph/9707372v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, including 2 figures. Talk presented by C. Giunti at the 9th International School "Particles and Cosmology", Kabardin

Scientific paper

The mixing of three and four massive neutrinos is considered. It is shown that the neutrino oscillation data are not compatible with a hierarchy of couplings in the three-neutrino case. In the case of four neutrinos, a hierarchy of masses is not favored by the data. Only two schemes with two pairs of close masses separated by a gap of the order of 1 eV can accommodate the results of all experiments. If the existing indications in favor of neutrino oscillations will be confirmed, it will mean that the general features of neutrino mixing are quite different from those of quark mixing.

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