Abstract
A realistic grand unified model has never been constructed in the literature due to three major difficulties: the seesaw mechanism without spoiling gauge coupling unification, the doublet-triplet splitting and the proton decay suppression. We propose a renormalizable supersymmetric SO(10) model with all these difficulties solved naturally by imposing an extra discrete symmetry.
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Chen, YK., Zhang, DX. A renormalizable supersymmetric SO(10) model. J. High Energ. Phys. 2015, 5 (2015). https://doi.org/10.1007/JHEP07(2015)005
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DOI: https://doi.org/10.1007/JHEP07(2015)005