Coupled-channel interaction for intermediate-energy nucleon-nucleon reactions
Journal Article
·
· Phys. Rev. D; (United States)
General effects of coupling a system to higher-mass channels are reviewed. The dominant effect is the addition of an attraction which increases with energy up to and, when the coupled channel is not in an S state, beyond inelastic threshold. This can produce resonances whose widths and inelasticities are largely determined by the resonance position. A model is presented for nucleon-nucleon channels coupled to N..delta.., NN*, or ..delta delta.. channels. It uses the Feshbach-Lomon nucleon-nucleon interaction and one-pion-exchange potentials plus phenomenological cores for the transition interactions. The width of the isobars is included. Good fits are obtained to NN channels for E/sub L/< or approx. =1 GeV, including the ''resonant'' /sup 1/D/sub 2/ and /sup 3/F/sub 3/ partial waves. A structure may be present in the /sup 3/P/sub 0/ partial wave. In those partial waves where one-pion exchange predicts the largest transition potentials, the fit is improved by the long-range potential tails.
- Research Organization:
- Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- DOE Contract Number:
- AC02-76ER03069
- OSTI ID:
- 5021341
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 26:3; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Wed Dec 31 23:00:00 EST 1980
· Phys. Rev., C; (United States)
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OSTI ID:6729764
Related Subjects
645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
BOUNDARY CONDITIONS
COUPLED CHANNEL THEORY
ENERGY DEPENDENCE
HADRON-HADRON INTERACTIONS
INELASTIC SCATTERING
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MATHEMATICAL MODELS
NUCLEON-NUCLEON INTERACTIONS
OBE MODEL
OPE MODEL
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Baryon No. Greater than 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
BOUNDARY CONDITIONS
COUPLED CHANNEL THEORY
ENERGY DEPENDENCE
HADRON-HADRON INTERACTIONS
INELASTIC SCATTERING
INTERACTIONS
MATHEMATICAL MODELS
NUCLEON-NUCLEON INTERACTIONS
OBE MODEL
OPE MODEL
PARTICLE INTERACTIONS
PARTICLE MODELS
PERIPHERAL MODELS
POTENTIALS
SCATTERING