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Natural SciencesPhysicsNuclear PhysicsParticle PhysicsTheoretical PhysicsBeta DecayElementary ParticlesFlavor PhysicsGrand Unified TheoriesNeutrino PhysicsNuclear DecayElementary Particle InteractionsGrand Unified Model BuildingLeptonic DecaysMixture TheoryNeutrino Flavor MixingNeutrino Flavor PhysicsRadiative Decay Rate
A particle mixture theory of neutrino is proposed assuming the existence of two kinds of neutrinos. Based on the neutrino-mixture theory, a possible unified model of elementary particles is constructed by generalizing the Sakata-Nagoya model. Our scheme gives a natural explanation of smallness of leptonic decay rate of hyperons as well as the subtle difference of G_ν's between µ-e and β-decay.