Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-11
Phys.Rev.Lett. 80 (1998) 5263-5266
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, LaTeX
Scientific paper
10.1103/PhysRevLett.80.5263
Within the context of supergravity-coupled supersymmetry, fields which are gauge and global singlets are usually considered anathema. Their vacuum expectation values are shifted by quadratically divergent tadpole diagrams which are cutoff at the Planck scale, destabilizing the classical potential and driving the singlet field to large values. We demonstrate a new and generic mechanism which stabilizes the singlet in the presence of an extended gauge symmetry. Such a symmetry will be broken down to the Standard Model by the supergravity interactions near the scale of spontaneous supersymmetry-breaking in the hidden-sector (about 10^{10-11} GeV). The resulting singlet expectation value is stabilized and naturally of order the gravitino mass, providing therefore a weak-scale mass for the Higgs fields of the supersymmetric Standard Model (a "mu-parameter"). The resulting low-energy theory is the minimal supersymmetric Standard Model, with all new fields decoupling at the intermediate scale.
Kolda Christopher
Pokorski Stefan
Polonsky Nir
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