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Relating neutrino masses and mixings by discrete symmetries
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Relating neutrino masses and mixings by discrete symmetries
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Lepton mixing can originate from the breaking of a flavor symmetry in different ways in the neutrino and the charged lepton sector. We propose an extension of this framework which allows to connect the mixing parameters with masses, and more precisely, with certain types of degeneracy of the neutrino mass spectrum. We obtain relations between the mixing parameters for the cases of partial degeneracy, m1 = m2, and complete degeneracy, m1 = m2 = m3. These relations determine also the Majorana phases. It is shown that relatively small corrections to these lowest order results can produce the required mass splitting and modify the mixing without significant changes of the other symmetry results.
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Cited by 1 Pith paper
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Another relation among the neutrino mass-squared differences?
The ratio (√Δm²31 + √Δm²21)/(√Δm²31 − √Δm²21) is claimed to be exactly √2, implying m1 ≈ 0 and absolute neutrino masses near 0.009 eV and 0.050 eV.
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