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Two principles, the standard SU(2)L×U(1) electroweak theory below 100 GeV and the natural mass scale, are suggested for studying possible connections between neutrino oscillation and a mass hierarchy above 100 GeV. Neutrino-oscillation parameters of order {} 1 eV suggest a natural mass scale for the oscillation of order {} 10⁸-10⁹ GeV. An SU(7) model in this scenario is described in some detail.
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Kang et al. (1980) studied this question.
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