Broken SU(4) symmetry and the new resonances. [Decay rates, spectral function sum rules]
Journal Article
·
· Phys. Rev., D; (United States)
Weinberg's spectral-function sum rules are modified to accommodate broken-symmetry effects of SU(4). With a simple choice of the symmetry-breaking term, the spectral-function sum rules yield the observed vector-meson mass spectrum as well as sum rules for the e/sup -/e/sup +/ decay rates of vector mesons. In particular, a new mass formula, which can be interpreted as the broken-symmetry version of the Schwinger formula, is derived. The agreement with experiment is excellent. (AIP)
- Research Organization:
- International Centre for Theoretical Physics, Trieste, Italy
- OSTI ID:
- 7326046
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 14:3; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645302 -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Electromagnetic & Weak Interactions-- (-1987)
645303* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Strong Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
DECAY
ELEMENTARY PARTICLES
EQUATIONS
FUNCTIONS
HADRONS
INTERACTIONS
KINETICS
LEPTONIC DECAY
LIE GROUPS
MASS FORMULAE
MESON RESONANCES
MESONS
PARTICLE DECAY
REACTION KINETICS
RESONANCE PARTICLES
SPECTRAL FUNCTIONS
SU GROUPS
SU-4 GROUPS
SUM RULES
SYMMETRY BREAKING
SYMMETRY GROUPS
VECTOR MESONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY
645303* -- High Energy Physics-- Particle Invariance Principles & Symmetries-- Applications to Strong Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
DECAY
ELEMENTARY PARTICLES
EQUATIONS
FUNCTIONS
HADRONS
INTERACTIONS
KINETICS
LEPTONIC DECAY
LIE GROUPS
MASS FORMULAE
MESON RESONANCES
MESONS
PARTICLE DECAY
REACTION KINETICS
RESONANCE PARTICLES
SPECTRAL FUNCTIONS
SU GROUPS
SU-4 GROUPS
SUM RULES
SYMMETRY BREAKING
SYMMETRY GROUPS
VECTOR MESONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY