Testing the quark-exchange contribution to the nuclear force in K-italic/sup -/p atoms
The strong annihilation of K-italic/sup -/p atoms to ..lambda pi.. and ..sigma pi.. proceeds not only through intermediate resonance formation (primarily the ..lambda..(1405)), but also, due to the composite structure of the hadrons involved, by means of quark rearrangements induced by residual quark-quark interactions. We evaluate the amplitudes for these rearrangement processes using a QCD-like potential model and show them to be of the correct sign and magnitude, relative to the reasonably well-known resonance contributions, to explain the experimentally observed K-italic/sup -/p branching fractions. This result, in addition to being relevant to the interpretation of the ..lambda..(1405), provides an independent check of the quark-exchange mechanisms believed responsible for short-distance nucleon-nucleon interactions.
- Research Organization:
- Theory Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
- OSTI ID:
- 5452766
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 34:5; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
645206* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
ATOMS
BARYON SPECTROSCOPY
BARYON-BARYON INTERACTIONS
BARYONS
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
ELEMENTS
EXCHANGE INTERACTIONS
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONIC ATOMS
HADRONS
HYDROGEN
HYPERONS
INTERACTIONS
ISOSPIN
KAONIC ATOMS
KAONS
KAONS MINUS
LAMBDA-1405 RESONANCES
LIE GROUPS
MATHEMATICAL MODELS
MESIC ATOMS
MESONS
NONMETALS
NUCLEAR FORCES
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PIONS
PROTONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARK-QUARK INTERACTIONS
SIGMA BARYONS
SIGMA PARTICLES
SPECTROSCOPY
SPIN
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS
TESTING