Universal seesaw mechanism?
1987; American Physical Society; Volume: 59; Issue: 4 Linguagem: Inglês
10.1103/physrevlett.59.393
ISSN1092-0145
AutoresAharon Davidson, Kameshwar C. Wali,
Tópico(s)Neutrino Physics Research
ResumoThe idea that fermions acquire their masses via a universal seesaw mechanism can provide a plausible explanation for the mass hier- archy ${\mathrm{m}}_{\mathrm{e}}$,u,d\ensuremath{\simeq}${10}^{\mathrm{\ensuremath{-}}4}$${\mathrm{M}}_{\mathrm{W}}$. A minimal SU(3${)}_{\mathrm{C}}$\ensuremath{\bigotimes}SU(2${)}_{\mathrm{L}}$ \ensuremath{\bigotimes}SU(2${)}_{\mathrm{R}}$\ensuremath{\bigotimes}U(1${)}_{\mathrm{B}\mathrm{\ensuremath{-}}\mathrm{L}}$ grand unifiable realization is presented. Whereas the fermionic representation is enlarged to include SU(2${)}_{\mathrm{L}}$\ensuremath{\bigotimes}SU(2${)}_{\mathrm{R}}$ 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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