Stimulated by the phenomenological success of the universal seesaw mass matrix model,
where the mass terms for quarks and leptons fi (i= 1, 2, 3) and hypothetical superheavy …

We investigate the implications of a seesawtype mass matrix, ie, M f⋍ m LM F− 1 m R, for
quarks and leptons f under the assumption that the matrices m L and m R are common to all …

In a model where quark and lepton masses and family-mixings are caused not by a variety
of Yukawa couplings y ij (i, j= 1, 2, 3: family indices) with one vacuum expectation value …

On the basis of a seesaw-type mass matrix model M f≃ m LMF-1 m R for quarks and leptons
f, analytical expressions of the masses and mixings of the fermions f are investigated. Here …

The general features of the evolution of the Yukawa coupling constants and seesaw
operators in the universal seesaw model with det MF= 0 are investigated. In the model, not …

A universal seesaw mass matrix model, which gives a successful description of the quark
mass matrix in terms of lepton masses, yields three “sterile” neutrinos ν is, which compose …

Neutrino masses and mixings are investigated on the basis of a universal seesaw mass
matrix model, in which quark (except for the top quark) and charged lepton mass matrices M …

On the basis of a seesaw-type mass matrix model for quarks and leptons, where mL∝ mR
are universal for f= u, d, v and e (up-quark, downquark, neutrino and charged lepton sectors …

We proof that the proton is stable in the left-right symmetric gauge model [SU (6)] $^ 3\times
$ Z $ _3 $, which unifies nongravitational forces with flavors, broken spontaneously by a …

It is shown that a minimal extension of the standard model with leptons that transform as
singlets under the SU (2) symmetry of weak interactions can explain the recently reported …