Yukawa Quasi-Unification

Details Yukawa Quasi-Unification Yukawa Quasi-Unification

2002-03-14

arxiv.org/abs/hep-ph/0203131v3

Nucl.Phys.B638:165-185,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages including 10 figures, Revtex, minor corrections, version to appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(02)00483-2

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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