Family Symmetries and Proton Decay

Abstract

The proton decay modes $p\to K^0{e}^{+}$ and $p\to K^0{\mu }^{+}$ may be visible in certain supersymmetric theories, and if seen would provide evidence for new flavor physics at extremely short distances. These decay modes can arise from the dimension five operator $(Q_1{Q}_1{Q}_2{L}_{1,2})$, where $Q_i$ and $L_i$ are $i^{th}$ generation quark and lepton superfields respectively. Such an operator is not generated at observable levels due to gauge or Higgs boson exchange in a minimal GUT. However in theories that explain the fermion mass hierarchy, it may be generated at the Planck scale with a strength such that the decays $p\to K^0{\ell }^{+}$ are both compatible with the proton lifetime and visible at Super-Kamiokande. Observable proton decay can even occur in theories without unification.

NSF-ITP-94-69, LBL-35807, DOE/ER/40561-148-INT94-00-61, 13 pages, written with harvmac

References in corpus (7)

• Mass Matrix Models
• Nucleon Decay in the Minimal Supersymmetric $SU(5)$ Grand Unification
• Should Squarks Be Degenerate?
• A Systematic SO(10) Operator Analysis for Fermion Masses
• Flavor Unification and Discrete Nonabelian Symmetries
• (S)quark Masses and Non-Abelian Horizontal Symmetries
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Cited by in corpus (44)

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• Predictions from an Anomalous U(1) Model of Yukawa Hierarchies
• Supersymmetric Standard Model from the Heterotic String (II)
• REALISTIC MODELS WITH A LIGHT U(1) GAUGE BOSON COUPLED TO BARYON NUMBER
• Possible Light U(1) Gauge Boson Coupled to Baryon Number
• SO(10) theory of R-parity and neutrino mass
• Suggested new modes in supersymmetric proton decay
• Lepton Mass Matrix Models
• Anomalous Flavor U(1)_X for Everything
• Deriving Models for keV sterile Neutrino Dark Matter with the Froggatt-Nielsen mechanism
• $(S_3{)}^3$ flavor symmetry and $p\to K^0{e}^{+}$
• Nonabelian Discrete Family Symmetry to Soften the SUSY Flavor Problem and to Suppress Proton Decay
• Probing the Planck Scale with Proton Decay
• Towards a complete $\Delta (27)\times SO(10)$ SUSY GUT
• GUT Breaking on the Lattice
• What is the discrete gauge symmetry of the R-parity violating MSSM?
• A Supersymmetric Theory of Flavor and R Parity
• Doublet-Triplet Splitting and Fat Branes
• An $S_4\times SU(5)$ SUSY GUT of flavour in 6d
• E6 Models from F-theory
• Towards a Realistic F-theory GUT
• Discrete R-symmetry anomalies in heterotic orbifold models
• Physics Beyond the Standard Model and Dark Matter
• Neutrino Oscillations from Discrete Non-Abelian Symmetries
• Dicyclic Horizontal Symmetry and Supersymmetric Grand Unification
• Effective operators in Supersymmetry
• On Supersymmetric b-tau Unification, Gauge Unification, and Fixed Points
• $\mathbf{SO}(10)\times {\mathbf{S}}_4$ Grand Unified Theory of Flavour and Leptogenesis
• Proton Decay, Fermion Masses and Texture from Extra Dimensions in SUSY GUTs
• U(1) Flavor Symmetry and Proton Decay in Supersymmetric Standard Model
• A low-scale flavon model with a $Z_N$ symmetry
• Phenomenology with Supersymmetric Flipped SU(6)
• Dimension-Five Operators in Grand Unified Theories
• Mass hierarchy from the flavor symmetry in supersymmetric multi-Higgs doublet model
• Dominance of the Nucleon Decay K-channels in $P_{LR}$ invariant SO(10)
• Seminatural Gauge Mediation from Product Group Unification
• Nucleon decay in gauge unified models with intersecting D6-branes
• Sculpting the Standard Model from low-scale Gauge-Higgs-Matter $E_8$ Grand Unification in ten dimensions
• Fermion Mass Hierarchy without Flavour Symmetry
• Hunting a Light U(1)_B Gauge Boson Coupled to Baryon Number in Collider Experiments
• Nonanomalous Discrete R-Symmetry and Light Gravitino
• Nucleon Decay in Non-Minimal Supersymmetric SO(10)
• Flavor Symmetry and Proton Decay in PeV-Scale Supersymmetry