Abstract
In a seesaw mass matrix model \(M_f = m_L M_F^{-1} m_R^\dagger\) with a universal structure of \(m_L \propto{m}_R\), as the origin of mL (mR) for quarks and leptons, flavor-triplet Higgs scalars whose vacuum expectation values vi are proportional to the square roots of the charged lepton masses mei, i.e. \(v_i\propto\sqrt{m_{ei}}\), are assumed. Then, it is investigated whether such a model can explain the observed neutrino masses and mixings (and also quark masses and mixings) or not.
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Koide, Y. Seesaw mass matrix model of quarks and leptons with flavor-triplet Higgs scalars. Eur. Phys. J. C 48, 223–228 (2006). https://doi.org/10.1140/epjc/s10052-006-0009-5
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DOI: https://doi.org/10.1140/epjc/s10052-006-0009-5