Abstract
This chapter is based on the work of [439]. We have checked whether the SM gauge couplings unify at the string scale in the class of models similar to Model 1 discussed in the previous chapter. All of the 15 MSSM-like models of [406] have three families of quarks and leptons and one or more pairs of Higgs doublets. They all admit an SU(6) orbifold GUT with gauge-Higgs unification and the third family in the bulk.
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References
Lebedev, O., Nilles, H.P., Raby, S., Ramos-Sanchez, S., Ratz, M., Vaudrevange, P.K.S., Wingerter, A.: Phys. Rev. D 77, 046013 (2008). doi:10.1103/PhysRevD.77.046013
Dundee, B., Raby, S., Wingerter, A.: Phys. Rev. D 78, 066006 (2008). doi:10.1103/PhysRevD.78.066006
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Raby, S. (2017). Gauge Coupling Unification and Proton Decay. In: Supersymmetric Grand Unified Theories. Lecture Notes in Physics, vol 939. Springer, Cham. https://doi.org/10.1007/978-3-319-55255-2_22
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DOI: https://doi.org/10.1007/978-3-319-55255-2_22
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