41 citations · 70 across the 6 of their papers we have counts for
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J. A. Casas, A. Ibarra, F. Jimenez-Alburquerque
It is an experimental fact that the mass ratio for the two heavier neutrinos, h = m_3/m_2 < 6, is much smaller than the typical quark and lepton hierarchies, which are O(20-300). W…