Dynamical Doublet-Triplet Higgs Mass Splitting

Abstract

We propose a new mechanism towards the solution to the doublet-triplet Higgs mass splitting problem in the supersymmetric grand unified theory. Our model is based on the gauge group $SU(5{)}_H\times SU(5{)}_{GUT}$, where $SU(5{)}_H$ and $SU(5{)}_{GUT}$ are a new strong gauge interaction and the ordinary grand unified gauge group, respectively. The doublet-triplet Higgs mass splitting is realized through the quantum deformation of moduli space caused by the strong $SU(5{)}_H$ gauge dynamics. The low energy description of our model is given by the minimal supersymmetric standard model.

Comments: 9 pages, LaTeX, the version to be published in Phys. Rev. D. (some typographical errors have been corrected)