Effective quark model with chiral U(3)XU(3) symmetry for baryon octet and decuplet

Details Effective quark model with chiral U(3)XU(3) symmetry for baryon octet and decuplet Effective quark model with chiral U(3)XU(3) symmetry for baryon octet and decuplet

1998-05-17

arxiv.org/abs/hep-ph/9805348v3

Phys.Rev.C59:451-459,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, Latex, no figures

Scientific paper

10.1103/PhysRevC.59.451

We suggest an effective quark model for low-lying baryon octet and decuplet motivated by QCD with a linearly rising confinement potential incorporating the extended Nambu-Jona-Lasinio (ENJL) model with linear realization of chiral U(3)XU(3) symmetry. Baryons are considered as external heavy states coupled to local three-quark currents with fixed spinorial structure and to low-lying mesons through quark-meson interactions defined in the ENJL--model. In the constituent quark loop representation we have calculated the coupling constants of the (pi NN), (pi N Delta) and (gamma N Delta) interactions and the (sigma_{\pi N})-term. The obtained results are in reasonable agreement with experimental data and other effective field theory approaches.

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