Double protection of the Higgs potential

Abstract

A mechanism of double protection of the Higgs potential, by supersymmetry and by a global symmetry, is investigated in a class of supersymmetric models with the SU(3)xSU(3)xU(1) gauge symmetry. In such models the electroweak symmetry can be broken with no fine-tuning at all.

arXiv comment10 pages, 2 figures, latex; v2: typos corrected, references added, new paragraph on decoupling D-terms

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