Pseudoscalar-meson mixing problem, spectral-function sum rules, and chiral symmetry. [Width, effective chiral lagrangian]
Journal Article
·
· Phys. Rev., D; (United States)
The pseudoscalar-meson spectrum is first discussed in connection with SU(4) extended spectral-function sum rules. The spectrum can be fitted into the sum rule to within a well-known ambiguity in assigning the eta' particle. In order to remove this ambiguity, the eta' decay width as well as its mass are next investigated in the effective-chiral-Lagrangian approach. Experimental data seem to favor the assignment of eta' = X (958).
- Research Organization:
- International Centre for Theoretical Physics, Trieste, Italy
- OSTI ID:
- 7316618
- Journal Information:
- Phys. Rev., D; (United States), Vol. 15:3
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:7316618
Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ETA-958 RESONANCES
DECAY
MASS
PSEUDOSCALAR MESONS
MASS SPECTRA
SPECTRAL FUNCTIONS
SUM RULES
CHIRAL SYMMETRY
LAGRANGIAN FUNCTION
MATRIX ELEMENTS
SU-4 GROUPS
BOSONS
ELEMENTARY PARTICLES
EQUATIONS
FUNCTIONS
HADRONS
LIE GROUPS
MESON RESONANCES
MESONS
RESONANCE PARTICLES
SPECTRA
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
645303* - High Energy Physics- Particle Invariance Principles & Symmetries- Applications to Strong Interactions- (-1987)
ETA-958 RESONANCES
DECAY
MASS
PSEUDOSCALAR MESONS
MASS SPECTRA
SPECTRAL FUNCTIONS
SUM RULES
CHIRAL SYMMETRY
LAGRANGIAN FUNCTION
MATRIX ELEMENTS
SU-4 GROUPS
BOSONS
ELEMENTARY PARTICLES
EQUATIONS
FUNCTIONS
HADRONS
LIE GROUPS
MESON RESONANCES
MESONS
RESONANCE PARTICLES
SPECTRA
SU GROUPS
SYMMETRY
SYMMETRY GROUPS
645303* - High Energy Physics- Particle Invariance Principles & Symmetries- Applications to Strong Interactions- (-1987)