Gauge coupling unification with extra Higgs doublets

Abstract

Gauge coupling unification is studied within the framework where there are extra Higgs doublets and $E_6$ exotic fields. Supersymmetric models and nonsupersymmetric models are investigated, and a catalog of models with gauge coupling unification is presented.

6 pages, 2 figures, To appear in Fortsch.Physik

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• Computable conditions for order-2 $CP$ symmetry in NHDM potentials