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The idea that fermions acquire their masses via a universal seesaw mechanism can provide a plausible explanation for the mass hier- archy mₑ,u,d{}10^-4{M}W$. A minimal SU(3${)}CSU(2{)}LSU(2{)}RU(1{)}_{B{{-}}L}$ grand unifiable realization is presented. Whereas the fermionic representation is enlarged to include SU(2${)}LSU(2{)}R$ singlets, the Higgs system contains none of the conventional scalars of left-right-symmetric models. An alternative way to account for the superlightness of neutrinos emerges.
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Davidson et al. (1987) studied this question.
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