Baryon resonances in a constituent quark model
Creators
- 1. Osaka City Univ. (Japan). Dept. of Physics
- 2. Yamanashi Univ., Kofu (Japan). Faculty of Engineering
- 3. Department of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka (Japan)
Description
The role of pseudoscalar mesons in the dynamical properties of baryon resonances is examined by means of the constituent quark model with meson-quark coupling. Since resonance properties are closely related to meson-baryon scatterings, it is important to include reaction processes as well as mass spectra in the analysis. The isobar model is employed to properly extract information of baryon resonances from reaction amplitudes. Prominent features of resonance spectra are reproduced fairly well by taking account of baryon self-energies due to meson-quark coupling. Several problems remained in the static quark model of baryons, e.g. Λ(1405)-Λ(1520) mass difference, are also studied. Brief comments on some improvements of the present model are given. (author)
Additional details
Publishing Information
- Journal Title
- Progress of Theoretical Physics, Supplement
- Journal Issue
- no.137
- Journal Page Range
- p. 169-188
- ISSN
- 0375-9687
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 31030295
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BARYONS; ISOBAR MODEL; NUCLEAR FORCES; NUCLEAR POTENTIAL; NUCLEAR STRUCTURE; PARTICLE INTERACTIONS; PSEUDOSCALAR MESONS; QUARK MODEL; RESONANCE SCATTERING
- Descriptors DEC
- BOSONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INELASTIC SCATTERING; INTERACTIONS; MATHEMATICAL MODELS; MESONS; PARTICLE MODELS; POTENTIALS; SCATTERING
Optional Information
- Notes
- 53 refs., 8 figs., 5 tabs.