On the possible solution of the doublet-triplet problem in extended $SU(\ge 8)$ SUSY GUTs

Abstract

The generalization of the "custodial symmetry" mechanism which leads to the natural (without fine tuning) explanation of the doublet-triplet hierarchy is suggested in the frames of extended $SU(N\ge 8)$ SUSY GUTs. It is shown also that such type of SUSY GUT can predict the value of strong gauge coupling constant ${\alpha }_S(M_Z)$ consistent with present experimental data.

8 pages, latex, 2 latex figures included

References in corpus (13)

• Natural Suppression of Higgsino-Mediated Proton Decay in Supersymmetric SO(10)
• Precision Corrections to Supersymmetric Unification
• Natural Gauge Hierarchy in SO(10)
• Gauge Coupling Unification in Realistic Free-Fermionic String Models
• Could the Supersymmetric Higgs Particles Naturally be Pseudo-Goldstone Bosons?
• Making Ends Meet: String Unification and Low-Energy Data
• SUSY SU(6) GIFT for doublet-triplet splitting and fermion masses
• Light Threshold Effects in Supersymmetric Grand Unified Theories
• Low ${\alpha }_{strong}(M_Z)$, Intermediate Scale SUSY SO(10) GUT and Its Implications
• Effective couplings and Perturbative Unification
• Light thresholds in Grand Unified Theories
• Towards the Non-Chiral Extension of SM and MSSM
• Missing Doublet Multiplet as the Origin of the Doublet-Triplet Splitting in SUSY SU(6)

Cited by in corpus (2)

• 5D SUSY Orbifold SU(6) GUT and Pseudo-Goldstone Higgs Doublets
• Realistic Supersymmetric SU(6)