Proton Stability in $SU(5)\times U(1)$ and $SU(6)\times SU(2)$ GUTs

Abstract

We consider explicit unified models based on the flipped $SU(5)\times U(1)$ and $SU(6)\times SU(2)$ gauge groups in which gauge mediated proton decay operators are suppressed at leading order due to the special placement of matter fields in unified multiplets. We discuss both the theoretical structure and phenomenological implications of these models. For the latter, we examine the viability of the physical spectrum in each scenario and focus on the possible presence of other operators that could also contribute significantly to the proton decay rate.

arXiv comment13 pages

References in corpus (14)

• Proton Decay in Minimal Supersymmetric SU(5)
• Proton stability in TeV-scale GUTs
• Heavy and light scalar leptoquarks in proton decay
• Flipping SU(5) out of Trouble
• String Derived Exophobic SU(6)xSU(2) GUTs
• Could we rotate proton decay away?
• Distinguishing between SU(5) and flipped SU(5)
• Neutrino Bilarge Mixing and Flavor Physics in the Flipped SU(5) Model
• On Discrete R-Symmetries in MSSM and its Extensions
• Suppressing dimension-5 operators in general SU(5) models
• String scale unification in an SU(6)xSU(2) GUT
• Hierarchical Neutrino Masses and Mixing in Flipped-SU(5)
• Rotating Away Proton Decay in Flipped Unification
• Absolutely Stable Proton and Lowering the Gauge Unification Scale

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