Isospin-symmetry breaking in electroweak theories

Journal Article · Mon Oct 15 04:00:00 EDT 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.53.1523· OSTI ID:6300258

Appelquist, T; Bowick, M J; Cohler, E; Hauser, A I

The breaking of isospin symmetry in the electroweak theory with a dynamical Higgs sector is analyzed. The natural size of the breaking in various amplitudes is estimated, given that the breaking is very large in the fermion mass matrix. Special attention is paid to the parameter rhoequivalentM/sub w//sup 2//M/sub z//sup 2/cos /sup 2/theta/sub w/ . Hypercolor models are then investigated. There it is noted that rho-1 will naturally exhibit a sensitive, linear dependence on the fermion-doublet mass splittings.

• Research Organization: Department of Physics, Yale University, New Haven, Connecticut 06511
• OSTI ID: 6300258
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:16; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

645302* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Electromagnetic & Weak Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
COLOR MODEL
COMPOSITE MODELS
ELECTROMAGNETIC INTERACTIONS
FERMIONS
FIELD THEORIES
GAUGE INVARIANCE
HIGGS MODEL
INTERACTIONS
INVARIANCE PRINCIPLES
ISOSPIN
LIE GROUPS
MASS
MATHEMATICAL MODELS
PARTICLE MODELS
PARTICLE PROPERTIES
QUARK MODEL
SU GROUPS
SU-2 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK INTERACTIONS
WEINBERG-SALAM GAUGE MODEL