Bottom-tau unification by neutrinos in a nonsupersymmetric SU(5) model
Abstract
We show that Yukawa couplings of bottom quarks and tau leptons can be unified in a non-supersymmetric SU(5) model. We introduce an arbitrary number of right-handed neutrinos. Their masses and Yukawa couplings that satisfy the unification condition by renormalization group evolution are shown. In the case that the grand unification scale is 1015.5GeV and three right-handed neutrinos have the same mass, the upper bound on their mass is 1014.1GeV.
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