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Three family $Z_3$ orbifold trinification, MSSM and doublet-triplet splitting problem

Kang-Sin Choi·Jihn E. Kim
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Abstract

A $Z_3$ orbifold compactification of $E_8\times E_8^\prime$ heterotic string is considered toward a trinification $SU(3)^3$ with three light families. The GUT scale VEV's of the $SU(2)_W\times U(1)_Y\times SU(3)_c$ singlet chiral fields in two sets of the trinification spectrum allow an acceptable symmetry breaking pattern toward MSSM. We show that a doublet-triplet splitting is related to the absence of a $ΔB$ nonzero operator.

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Kang-Sin Choi, Jihn E. Kim. 2003-06-18. Three family $Z_3$ orbifold trinification, MSSM and doublet-triplet splitting problem. https://doi.org/10.1016/j.physletb.2003.06.036

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