The spin-orbit (LS) force of the hyperon-nucleon interaction is studied in the chiral SU(3) quark model. The symmetric LS terms from the one gluon exchange (OGE) and the scalar nonet exchange (OSE) are taken into account. It is shown that two different treatments (the LS coupling from either OGE or
Hyperon-nucleon interactions in a chiral SU(3) quark model
β Scribed by Z.Y. Zhang; Y.W. Yu; P.N. Shen; L.R. Dai; Amand Faessler; U. Straub
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 522 KB
- Volume
- 625
- Category
- Article
- ISSN
- 0375-9474
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β¦ Synopsis
Quark-chiral field interaction is studied in terms of the linear realization of the Lagrangian which is invariant under the SU(3)L Γ SU(3)R infinitesimal transformation and then is applied to the hyperon-nucleon scattering calculation in the framework of RGM. It is shown that the SU(3) chiral scalar fields affect the spin dependence of the A-N interaction and can improve the theoretical 27-p scattering cross section. (~) 1997 Elsevier Science B.V.
π SIMILAR VOLUMES
The nonmesonic decay moded of A in nulear matter, AN ~ NN, and production of A in proton-neutron scattering, pn ~ An, are studied theoretically. The weak transition of baryon is described by the one meson exchange mechanism and the direct quark-quark interaction mechanism.
The chiral SU(3) quark model is extended to include coupling between vector chiral field and quarks. By using this model, the phase shifts of NN scattering for different partial waves are studied. The results are very similar to those of the chiral SU(3) quark model calculation, in which one gluon e