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Within the context of supergravity-coupled supersymmetry, fields which aregauge and global singlets are usually considered anathema. Their vacuumexpectation values are shifted by quadratically divergent tadpole diagramswhich are cutoff at the Planck scale, destabilizing the classical potential anddriving the singlet field to large values. We demonstrate a new and genericmechanism which stabilizes the singlet in the presence of an extended gaugesymmetry. Such a symmetry will be broken down to the Standard Model by thesupergravity interactions near the scale of spontaneous supersymmetry-breakingin the hidden-sector (about 10^{10-11} GeV). The resulting singlet expectationvalue is stabilized and naturally of order the gravitino mass, providingtherefore a weak-scale mass for the Higgs fields of the supersymmetric StandardModel (a "mu-parameter"). The resulting low-energy theory is the minimalsupersymmetric Standard Model, with all new fields decoupling at theintermediate scale.Comment: 9 pages, LaTe

physical review letters

Stabilized Singlets in Supergravity as a Source of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="italic">μ</mml:mi></mml:math>Parameter

Stabilized Singlets in Supergravity as a Source of theμParameter