U(1) Flavor Symmetry and Proton Decay in Supersymmetric Standard Model

Preprint

10 April 2002

preprint
Published by arXiv in arXiv

Abstract

Issues of proton decay are examined in supersymmetric standard model with U(1) flavor symmetry. Dimension five proton-decay operators which arise generically are controlled by the flavor symmetry. We show that unlike the minimal supersymmetric SU(5) case the proton decay modes containing charged lepton can have large branching ratios if the dimension five operators of left-handed type dominate. Measuring the branching ratio of the electron mode to the muon mode may reveal the mechanism of the neutrino mass generation. The case with vanishing charges for Higgs doublets marginally survives the present experimental bound on proton life time.

Keywords

SUPERSYMMETRIC STANDARD MODEL
BRANCHING RATIOS
FLAVOR SYMMETRY
PROTON DECAY

All Related Versions

Version 1, 2002-03-20, ArXiv
Version 2, 2002-04-10, ArXiv
Version 3, 2002-07-13, ArXiv
Published version: Journal of High Energy Physics, 2002 (06), 032.

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