Evidence for corrections to soft-pion S-wave nonleptonic hyperon-decay amplitudes
Journal Article
·
· Phys. Rev. Lett.; (United States)
Evidence is found for corrections to the soft-pion S-wave nonleptonic hyperon-decay amplitudes from the observed deviation from the generalized Lee-Sugawara relation 2A(..xi../sub -//sup -/)+A(..lambda../sub -//sup 0/) +((3/2))/sup 1/2/A(..sigma../sub -//sup -/) = 0. These corrections, assumed to come from the low-lying 1/2/sup -/ excited baryon intermediate states, are estimated experimentally with use of the expressions suggested by the quark model and are found to reduce significantly the soft-pion results.
- Research Organization:
- Centre de Physique Theorique de l'Ecole Polytechnique, F-91128 Palaiseau Cedex, France
- OSTI ID:
- 6530859
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 53:4; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
COMPOSITE MODELS
COUPLING CONSTANTS
CURRENT ALGEBRA
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYPERONS
LIE GROUPS
MATHEMATICAL MODELS
MESONS
PARTIAL WAVES
PARTICLE DECAY
PARTICLE MODELS
PIONS
PSEUDOSCALAR MESONS
QUARK MODEL
S WAVES
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BOSONS
COMPOSITE MODELS
COUPLING CONSTANTS
CURRENT ALGEBRA
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HYPERONS
LIE GROUPS
MATHEMATICAL MODELS
MESONS
PARTIAL WAVES
PARTICLE DECAY
PARTICLE MODELS
PIONS
PSEUDOSCALAR MESONS
QUARK MODEL
S WAVES
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
WEAK HADRONIC DECAY
WEAK PARTICLE DECAY