Low-energy constraints on supergravity parameters

We make a careful analysis of the constraints on supergravity parameters from the requirement of SU(2)×U(1) symmetry breaking. Since we obtain fully analytic solutions to the relevant renormalization group equations, we are able to explore the whole range of parameters. Breaking electroweak symmetry...

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Bibliographic Details
Published inNuclear physics. B Vol. 262; no. 2; pp. 299 - 316
Main Authors Bouquet, A., Kaplan, J., Savoy, C.A.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 16.12.1985
Elsevier
North-Holland ; Elsevier [1967-....]
Subjects
Exact sciences and technology
General relativity and gravitation
Physics
Quantum gravity
Supergravity
Symmetry breaking
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Summary:We make a careful analysis of the constraints on supergravity parameters from the requirement of SU(2)×U(1) symmetry breaking. Since we obtain fully analytic solutions to the relevant renormalization group equations, we are able to explore the whole range of parameters. Breaking electroweak symmetry with a light top quark leads to a strong correlation between the dimensionless parameters and the mass ratios in the supergravity lagrangian. However, the overall mass scale, e.g. m 3 2 , is not fixed by this requirements. The bound on the lightest neutral Higgs boson is reexamined. The lightest squark is usually an s-top, but we easily find cases where it is a s-bottom. Unfortunately the low-energy constraints provide no useful guidelines for experimentalists.
ISSN:0550-3213
1873-1562
DOI:10.1016/0550-3213(85)90288-3