Hyperon-nucleon interaction and meson exchange
We present first results of our general program which is to construct meson-exchange potentials for hadronic systems involving stange particles, i.e. for KN and AN. We proceed along the same guidelines which have been successfully applied in deriving the (latest version of the) Bonn NN potential, namely to keep the important recoil and nonlocal structure and to use a comprehensive set of diagrams without introducing any fictitious contribution. For KN we show that single vector-meson (..omega..,p) exchange already provides a fair description of the data except for the isospin-1 P/sub 3/2/ wave. This partial wave is remarkably improved by adding a specific higher-order process involving ..delta..K intermediate states. For the ..lambda..N system we demonstrate the inadequacy of a nonrelativistic treatment of the ..lambda..N interaction and point to the strong interplay between K and K*-exchange in the tensor channel, which is even stronger than for ..pi..- and p-exchange in the NN system.
- Research Organization:
- Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Kernphysik; Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6447200
- Report Number(s):
- LA-UR-85-3524; CONF-850921-3; ON: DE86002387
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON REACTIONS
BOSON-EXCHANGE MODELS
BOSONS
COUPLING
DATA
ELEMENTARY PARTICLES
EXCHANGE INTERACTIONS
FIELD THEORIES
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYPERON REACTIONS
INFORMATION
INTERACTIONS
INTERMEDIATE COUPLING
KAON-NUCLEON INTERACTIONS
L-S COUPLING
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE MODELS
PERIPHERAL MODELS
PHASE SHIFT
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RESONANCE PARTICLES
STRANGENESS-EXCHANGE REACTIONS
TENSOR FORCES
THEORETICAL DATA
VECTOR MESONS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON REACTIONS
BOSON-EXCHANGE MODELS
BOSONS
COUPLING
DATA
ELEMENTARY PARTICLES
EXCHANGE INTERACTIONS
FIELD THEORIES
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HYPERON REACTIONS
INFORMATION
INTERACTIONS
INTERMEDIATE COUPLING
KAON-NUCLEON INTERACTIONS
L-S COUPLING
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE MODELS
PERIPHERAL MODELS
PHASE SHIFT
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RESONANCE PARTICLES
STRANGENESS-EXCHANGE REACTIONS
TENSOR FORCES
THEORETICAL DATA
VECTOR MESONS