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arXiv · hep-ph/9705371

Some Advantages of SUSY SU(4) x SU(2)_L x SU(2)_R Model in String Derived SO(10) GUTs

Akihiro Murayama
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Abstract

A D-parity violated SUSY SU(4) x SU(2) _ L x SU(2)_R gauge model with the Higgs sector 2{(4,1,2)+(4-bar,1, 2)}+(1,2,2)+some(1,1,1)'s is shown to have the following advantages: (i) It is the simplest and almost unique solution that satisfies M_X = M_{string} ~0.6 x 10^{18} GeV and M_{INT} ~ 5 x10^{11} GeV in superstring derived SUSY SO(10) GUTs. (ii) The proton is stable enough by the automatic "doublet-triplet splitting" closely connected with the D-parity violation. (iii) The minimization of SUSY one-loop effective potential in a toy model suggests that the SO(10) gauge theory tends to break dynamically down to the SU(4) x SU(2)_ L x SU(2)_R model.

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Akihiro Murayama. 1997-05-21. Some Advantages of SUSY SU(4) x SU(2)_L x SU(2)_R Model in String Derived SO(10) GUTs. https://doi.org/10.1142/s0217751x98002043

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