Suppression of proton decay in the missing-partner model for supersymmetric SU(5) GUT

1994/06/29 by J. Hisano, T. Moroi, K. Tobe +1 · 4 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(94)01342-a

published as Phys.Lett. B342 (1995) 138-144

arxiv created 1994/06/29 · openalex publication_date 1995/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We construct a missing-partner model for supersymmetric SU(5) GUT assuming the Peccei-Quinn symmetry, in which the SU(5) gauge coupling constant remains in the perturbative regime below the gravitational scale ∼2.4× 10¹⁸\GEV. The Peccei-Quinn symmetry suppresses the dangerous dimension-five operators for the nucleon decay much below the limit from the present proton-decay experiments. We also stress that due to this suppression mechanism our model can accommodate even the large tanβ_H (∼ 60) scenario which has been recently suggested to explain the observed value of the m_b/m_τ ratio.

Citations

• Unity of All Elementary-Particle Forces
• Supersymmetry at ordinary energies. Masses and conservation laws
• Supersymmetric grand unified theories: Two-loop evolution of gauge and Yukawa couplings

Cited by

• Supersymmetric theory of flavor andRparity
• From prototype to realistic SUSY GUT
• A renormalizable supersymmetric SU(5) model
• Hadronic EDM constraints on orbifold GUTs