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Possibility of dynamical symmetry breaking (DSB) in scalarless SU(2) × U(1) is studied in weak coupling limit using an effective potential approach. In the linearized approximation we find that the model with a quark doublet can have DSB whereas the model with a lepton doublet cannot. When nonlinear effects, including those due to the non-abelian triple and quartic vector couplings, are included DSB...
Abstract In the model based on SUSY SU(5) combined with the T′ family symmetry, it is shown [1, 2] that fermion mass hierarchy and mixing angles can be naturally generated in both lepton and quark sectors compatible with various experimental measurements. But the predicted value for the non-zero lepton mixing angle of contradicts...
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