Yukawa couplings and proton decay in SUSY models

Details Yukawa couplings and proton decay in SUSY models Yukawa couplings and proton decay in SUSY models

1999-08-19

arxiv.org/abs/hep-ph/9908419v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, uses JHEP.cls, talk given at the Trieste Meeting of the TMR Network on Physics Beyond the Standard Model, 24-27 Febru

Scientific paper

We discuss proton decay induced by dimension--5 operators in supersymmetric models containing extra hypercharge-1/3 color-triplets. We derive a general formula relating dimension-5 operator to the color-triplet mass matrix. We show that certain zeros in the triplet mass-matrix together with some triplet coupling selection rules can lead to elimination of dimension-5 operators. We apply this mechanism to SU(5) and flipped SU(5) theories with extended Higgs sectors.

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