Isobars, Transition Potentials and Short Range Repulsion in the Nucleon-Nucleon Interaction
1977
32 pages
Published in:
- Nucl.Phys.A 278 (1977) 445-476
- Published: 1977
Citations per year
Abstract: (Elsevier)
A chiral dynamic model of πN scattering, including N and Δ(1230) intermediate states, is constructed and shown to be in agreement with empirical amplitudes for NN̄ → ππ in the pseudophysical region. With this model we calculate the Δ(1230) contribution to the NN interaction and indicate the importance of explicitly including pion “crossed-box” processes which simplify the isospin structure of the resulting NN interaction. We show that inconsistent nonrelativitic approximations in the coupled-channels approach lead to a serious overestimate of pion box diagrams. We show that ρ-meson exchange together with intermediate isobars leads to a short-range repulsion which may be described as an effective ω-meson exchange with G ω 2 4π = 5–8 .- MODEL: ISOBAR
- FIELD THEORY: CRITICAL PHENOMENA
- NUCLEON NUCLEON: INTERACTION
- INTERACTION: NUCLEON NUCLEON
- PI NUCLEON: INTERACTION
- INTERACTION: PI NUCLEON
- DELTA(1236)
- NUCLEON ANTINUCLEON: INTERACTION
- INTERACTION: NUCLEON ANTINUCLEON
- PI: FINAL STATE
References(23)
Figures(0)
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