Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-02-16
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex, 9 pages, talk given at the APCTP Workshop, Pacific Particle Physics Phenomenology, Seoul, Korea, 31 October - 2 Novembe
Scientific paper
We investigate the phenomenological consequences of lepton mass matrices originated from the family permutation symmetry and its suitable breakings. Adopting the recently proposed new mass matrix for the charged lepton mass matrix and the Majorana neutrino mass matrix considered before, we find that the resulting lepton flavor mixing matrix is consistent with the current data on various type of neutrino oscillation experiments except the Chlorine data and LSND measurement and that three neutrinos are almost degenerate in mass. Numerically the three neutrinos can account for about 50% of the hot dark matter(HDM) when the neutrino mass matrix is constrained by the small angle MSW solution for the solar neutrino problem, atmospheric neutrino data of the Super-Kamiokande group, and the limitation on the electron-type neutrino mass due to non-observation of neutrino-less double beta decays.
Kang Kyungsik
Kang Sin Kyu
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