Natural Suppression of Proton Decay in Supersymmetric Type III Seesaw Models

Abstract

Supersymmetric standard model (MSSM) has two sources of rapid proton decay: (i) R-parity breaking terms and (ii) higher dimensional Planck induced B-violating terms; its extensions to include neutrino masses via the type I seesaw mechanism need not have the first of these problems due to the existence of B-L as a gauge symmetry but for sure always have the second one. If instead, neutrino masses are explained in a type III seesaw extension of the standard model, an anomaly free gauge symmetry different from B-L is known to exist. In this note, it is shown that a realistic supersymmetric versions of this model can be constructed (MSSM as well as SUSY left-right with type III seesaw) which forbid the R-parity violating couplings of MSSM and suppress Planck scale contributions to proton decay. The degree of suppression of the latter depends on the weak gauge group. For the left-right case, the suppression to the desired level is easily achieved.

arXiv comment10 pages

References in corpus (16)

• Pathways to Naturally Small Neutrino Masses
• Some Simple Criteria for Gauged R-parity
• What is the Discrete Gauge Symmetry of the MSSM?
• Note on Discrete Gauge Anomalies
• Probing seesaw at LHC
• Renormalizable Adjoint SU(5)
• Upper Bound on the Mass of the Type III Seesaw Triplet in an SU(5) Model
• Natural R-Parity, μ-term, and Fermion Mass Hierarchy From Discrete Gauge Symmetries
• Supersymmetric Adjoint SU(5)
• New U(1) Gauge Symmetry of Quarks and Leptons
• Type III Seesaw and Left-Right Symmetry
• Gauged Discrete Symmetries and Proton Stability
• Seesaw Neutrino Mass and New U(1) Gauge Symmetry
• $\nu$-GMSB with Type III Seesaw and Phenomenology
• Flavor Physics in SO(10) GUTs with Suppressed Proton decay Due to Gauged Discrete Symmetry
• Anomaly-free constraints in neutrino seesaw models

Cited by in corpus (4)

• Inverse see-saw, leptogenesis, observable proton decay and ${\Delta }_{\mathrm{R}}^{\pm \pm }$ in SUSY SO(10) with heavy W_R
• Flavor unification, dark matter, proton decay and other observable predictions with low-scale $S_4$ symmetry
• Spontaneous R-Parity Violation, $A_4$ Flavor Symmetry and Tribimaximal Mixing
• Spontaneous R-parity violating type III seesaw