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Yukawa Quasi-Unification
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We construct concrete supersymmetric grand unified theories based on the Pati-Salam gauge group SU(4)_c x SU(2)_L x SU(2)_R which naturally lead to a moderate violation of "asymptotic" Yukawa unification and thus can allow an acceptable b-quark mass even with universal boundary conditions. We consider the constrained minimal supersymmetric standard model which emerges from one of these theories with a deviation from Yukawa unification which is adequate for mu>0. We show that this model possesses a wide and natural range of parameters which is consistent with the data on b --> s gamma, the muon anomalous magnetic moment, the cold dark matter abundance in the universe, and the Higgs boson masses. The lightest supersymmetric particle can be as light as about 107 GeV.
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Cited by 1 Pith paper
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Fermion masses and mixings in supersymmetric SO(10) with third-generation quasi-Yukawa unification
A supersymmetric SO(10) fit with a new dimension-six operator reproduces fermion masses and mixings (chi^2 = 8.8) and yields quasi-Yukawa unification y_t approx y_b approx 0.73 y_tau.
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