Meson theory of nucleon-nucleon scattering up to 2 GeV

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.29.195· OSTI ID:5170554

Lee, T H

We show that it is possible to construct a meson-exchange Hamiltonian for N, ..pi.., ..delta.., and N( (1470 MeV) to describe NN scattering up to 2 GeV. The model consists of: (a) vertex interactions ..pi..Nbold-arrow-left-right..delta.. or N(, and ..pi delta..bold-arrow-left-right..delta.. or N( with which an isobar model is constructed to describe the P/sub 33/ and P/sub 11/ ..pi..N scattering phase shifts up to 1 GeV; (b) the transition interactions from NN to N..delta.., ..delta delta.., NN(, and N(N( are determined from one-pion and one-rho exchange mechanisms; (c) the NN..-->..NN interaction is directly derived from the Paris potential by using a momentum-dependent procedure to subtract the contributions from intermediate states involving ..delta.. or N(. The NN..-->..NN scattering equation is cast into the familiar coupled-channel form, but with a highly nonlocal isobar self-energy ..sigma..(E,p) calculated from the vertex interactions ..pi..Nbold-arrow-left-right..delta.. or N( in a dynamical three-body approach. Both the isospin T = 1 and T = 0 NN scattering phase shifts of Arndt et al. up to 1 GeV can be described to a very large extent by the model. The fits are, on the average, better than most of the previous NN calculations.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 5170554
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 29:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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 RESONANCES
BARYON-BARYON INTERACTIONS
BARYONS
BOSON-EXCHANGE MODELS
COUPLED CHANNEL THEORY
CROSS SECTIONS
DIBARYON RESONANCES
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRON-HADRON INTERACTIONS
HADRONS
HAMILTONIANS
INTERACTIONS
ISOBAR MODEL
ISOSPIN
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
N RESONANCES
N-1470 RESONANCES
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PERIPHERAL MODELS
PHASE SHIFT
QUANTUM OPERATORS
RESONANCE PARTICLES
SCATTERING
THREE-BODY PROBLEM
TOTAL CROSS SECTIONS