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Abstract:
Massive heutrino and neutrino mixing are assumed. We get an equation of themixing angles and the neutrino mass ratios by horizontal symmetry. The conerete values of mixing angles are calculated. They are not contradictory with experiments. Inorder to explain μ → eγ process, exchange of neutrino with mass of GeV order isassumed. This neutrino is probably just the neutrino of fourth generation.
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Guo Hua
. In-medium QMC Model Parameters and Quark Condensation in Nuclear Matter. Chinese Physics C,
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Yu Hong
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