Double-doorway model for pion-nucleon elastic scattering in the [ital S][sub 11] channel

Journal Article · Mon Jan 31 23:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.1087· OSTI ID:5225081

McLeod, R J ^[1]; Ernst, D J ^[2]

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1. School of Physical Sciences, The Flinders University of South Australia, Bedford Park, South Australia 5042 (Australia)
2. Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennesseee 37235 (United States)

Resonance energy pion-nucleon elastic scattering in the [ital S][sub 11] channel is modeled by assuming that the pion plus nucleon couple to two resonances, the resonances couple to inleastic channels, but there is no direct coupling of the pion-nucleon channel to the inelastic channels. The model is solved by matrix [ital N]/[ital D] methods. The coupling of the inelastic channels to the elastic channel is taken directly from data. Using form factors from the constituent quark model, we find the model is able to reproduce the experimentally determined pion-nucleon phases in the [ital S][sub 11] channel over the resonance region and that the resonance part of the amplitude is negligible at low energies.

• OSTI ID: 5225081
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPOSITE MODELS
ELASTIC SCATTERING
HADRON-HADRON INTERACTIONS
INTERACTIONS
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PION-NUCLEON INTERACTIONS
QUARK MODEL
RESONANCE
S CHANNEL
SCATTERING