Supersymmetry Hierarchy Problems and Anomalous Horizontal U(1) Symmetry

Abstract

It is suggested that various hierarchy problems in supersymmetric standard model, i.e. the Yukawa hierarchies, the μproblem, and the suppression of dangerous baryon and/or lepton number (B/L) violating couplings, are resolved altogether in the framework of horizontal U(1) symmetry whose spontaneous breaking results in the appearance of one expansion parameter (the Cabibbo angle). Within a reasonable range of U(1) charges, there exist a few models compatible with experiments. The specific sizes of B/L violating couplings of these models are calculated and several phenomenological consequences are discussed.

18 pages, Latex

References in corpus (9)

• Supersymmetry without R-Parity and without Lepton Number
• Yukawa matrices from a spontaneously broken abelian symmetry
• Yukawa textures with an anomalous horizontal abelian symmetry
• Gauge Unification, Yukawa Hierarchy and the $\mu$ Problem
• Large $R$-parity Violating Couplings and Grand Unification
• Quark and Lepton Mass Matrices from Horizontal U(1) Symmetry
• $(B+L)$-conserving Nucleon Decays in Supersymmetric Models
• Symmetries at ultrahigh energies and searches for neutrino oscillations
• Gauged R-symmetry, Fermion and Higgs Mass Problem

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