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Radiative annihilation of K/sup -/p atoms and the. lambda. (1405)

Journal Article · · Phys. Rev. D; (United States)
; ;
The radiative annihilations of K/sup -/p atoms to ..lambda gamma.. and ..sigma../sup 0/..gamma.. are shown to be dominated by the ..lambda..(1405) hyperon. These processes thus provide a sensitive probe of the properties of this controversial state. We show that present data on the ..lambda gamma.. branching ratio are in agreement with its interpretation as a normal quark-model state, and that further information on the ..lambda gamma.. and the comparably strong ..sigma../sup 0/..gamma.. channel will provide compelling tests of the viability of this versus the K-barN bound-state interpretation.
Research Organization:
Department of Physics, York University, Toronto, Ontario, Canada M3J 1P3
OSTI ID:
5255855
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 32:7; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645400* -- High Energy Physics-- Field Theory
651220 -- Nuclear Properties & Reactions
A=1-5
Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
ANNIHILATION
ATOMS
BARYON RESONANCES
BARYONS
BASIC INTERACTIONS
BOUND STATE
BRANCHING RATIO
COMPOSITE MODELS
DIAGRAMS
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
FEYNMAN DIAGRAM
FIELD THEORIES
GAMMA RADIATION
HADRON-HADRON INTERACTIONS
HADRONS
HYPERONS
INTERACTIONS
IONIZING RADIATIONS
KAON MINUS-PROTON INTERACTIONS
KAON-NUCLEON INTERACTIONS
KAON-PROTON INTERACTIONS
LAMBDA-1405 RESONANCES
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
RADIATIONS
RESONANCE PARTICLES
S CHANNEL
SIGMA NEUTRAL
SIGMA PARTICLES
STRANGE PARTICLES
STRANGENESS
Y RESONANCES