Principles toward Solutions of the μ Problem
نویسنده
چکیده
We stress that a natural solution of the μ problem requires two ingredients: a symmetry that would enforce μ = 0 as well as the occurence of a small breaking parameter that generates a nonzero μ. It is suggested that both the Peccei-Quinn symmetry and the spontaneously broken R symmetry may be the sources of the needed μ term in the minimal supersymmetric standard model provided that they are spontaneously broken at a scale 1010 − 1012 GeV. To solve the strong CP problem with a hidden sector confining group, both of these symmetries are needed in superstring models with an anomalous U(1)A. Typeset using REVTEX 1
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