Proton Decay: Flipped vs Unflipped SU(5)

Abstract

We analyze nucleon decay modes in a no-scale supersymmetric flipped SU(5) GUT model, and contrast them with the predictions for proton decays via dimension-6 operators in a standard unflipped supersymmetric SU(5) GUT model. We find that these GUT models make very different predictions for the ratios $\Gamma (p\to {\pi }^0{\mu }^{+})/\Gamma (p\to {\pi }^0{e}^{+})$, $\Gamma (p\to {\pi }^{+}\bar{\nu })/\Gamma (p\to {\pi }^0{e}^{+})$, $\Gamma (p\to K^0{e}^{+})/\Gamma (p\to {\pi }^0{e}^{+})$ and $\Gamma (p\to K^0{\mu }^{+})/\Gamma (p\to {\pi }^0{\mu }^{+})$, and that predictions for the ratios $\Gamma (p\to {\pi }^0{\mu }^{+})/\Gamma (p\to {\pi }^0{e}^{+})$ and $\Gamma (p\to {\pi }^{+}\bar{\nu })/\Gamma (p\to {\pi }^0{e}^{+})$ also differ in variants of the flipped SU(5) model with normal- or inverse-ordered light neutrino masses. Upcoming large neutrino experiments may have interesting opportunities to explore both GUT and flavour physics in proton and neutron decays.

25 pages, 4 figures

References in corpus (8)

• The Super-GUT CMSSM Revisited
• SU(5) Grand Unification in Pure Gravity Mediation
• Superstring-Inspired Particle Cosmology: Inflation, Neutrino Masses, Leptogenesis, Dark Matter & the SUSY Scale
• Enhancement of Proton Decay Rates in Supersymmetric SU(5) Grand Unified Models
• Symmetry Breaking and Reheating after Inflation in No-Scale Flipped SU(5)
• A Minimal SU(5) SuperGUT in Pure Gravity Mediation
• A new approach to gauge coupling unification and proton decay
• Proton decay in flux compactifications

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