Meson-exchange Hamiltonian for NN scattering and isobar-nucleus dynamics

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5591867

Lee, T S.H.

We have constructed a meson-exchange Hamiltonian for ..pi.., N, ..delta.. and N* for NN scattering up to 2 GeV. The model gives good descriptions of the Arndt phase-shifts up to 1 GeV in both the T = 0 and T = 1 channels. The calculated total cross sections sigma/sup tot/, ..delta..sigma/sub L//sup tot/ and ..delta..sigma/sub T//sup tot/ agree to a large extent with the data in both the magnitudes and the signs. The present calculation gives a sound starting point for future refinements. Among them, a large-scale three-body calculation could be needed to investigate the energy dependence of the effect due to NN interactions in the ..pi..NN channel. Until this effect is carefully studied, it is premature to extract information on dibaryon resonances, if they exist, from the data. Our model also gives definite predictions of np scattering. Precise np polarization measurements at higher energy > 0.6 GeV are needed to have a complete test of our model. Finally, the present model Hamiltonian can be used to carry our many-body calculations.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5591867
• Report Number(s): CONF-830588-4; ON: DE83017974
• Country of Publication: United States
• Language: English

Related Subjects

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653003 -- Nuclear Theory-- Nuclear Reactions & Scattering
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
BOSON-EXCHANGE MODELS
BOSONS
CROSS SECTIONS
DELTA-1236 RESONANCES
DIBARYON RESONANCES
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
HAMILTONIANS
INTERACTIONS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MESONS
MEV RANGE
MEV RANGE 100-1000
N RESONANCES
N-1470 RESONANCES
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
OBE MODEL
OPE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PERIPHERAL MODELS
PIONS
PSEUDOSCALAR MESONS
QUANTUM OPERATORS
RESONANCE PARTICLES
SCATTERING
TOTAL CROSS SECTIONS