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Author Devyanin, S. A. ♦ Jaffe, R. L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ INTERMEDIATE VECTOR BOSONS ♦ SUM RULES ♦ STANDARD MODEL ♦ WEINBERG-SALAM GAUGE MODEL ♦ QUANTUM CHROMODYNAMICS ♦ SPECTRAL FUNCTIONS ♦ SPIN ♦ STRONG-COUPLING MODEL ♦ SU-2 GROUPS ♦ WEAK-COUPLING MODEL ♦ ANGULAR MOMENTUM ♦ BOSONS ♦ ELEMENTARY PARTICLES ♦ EQUATIONS ♦ FIELD THEORIES ♦ FUNCTIONS ♦ INTERMEDIATE BOSONS ♦ LIE GROUPS ♦ MATHEMATICAL MODELS ♦ NUCLEAR MODELS ♦ PARTICLE MODELS ♦ PARTICLE PROPERTIES ♦ QUANTUM FIELD THEORY ♦ SU GROUPS ♦ SYMMETRY GROUPS ♦ UNIFIED GAUGE MODELS ♦ UNIFIED-FIELD THEORIES ♦ High Energy Physics- Particle Interactions & Properties-Theoretical- General & Scattering Theory ♦ High Energy Physics- Field Theory
Abstract The QCD-like sum-rule method is applied to the W boson in the strong-coupling version of the standard model. For comparison the same methods are applied to the perturbative (Glashow-Salam-Weinberg (GSW)) version of the model. It is shown that the method works in the GSW model with good accuracy independent of the continuum threshold if the definition of the so-called sum-rule window is changed. In the strong-coupling model, one cannot ''predict'' the W-boson mass because the vacuum expectation values (VEV's) are unknown. Instead, a restriction on VEV's coming from the experimental data can be found when some additional assumptions about the W' contribution are made. These restrictions can be useful in the application of the sum-rule method to other channels (Higgs, isoscalar vector, excited fermions, leptoquarks, etc.). The vacuum structure in the strong-coupling model may differ considerably from the GSW model.
Educational Use Research
Learning Resource Type Article
Publisher Date 1986-05-01
Publisher Department Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
Publisher Place United States
Journal Phys. Rev. D
Volume Number 33
Issue Number 9
Organization Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139


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