| Partial decay widths of the nucleon resonances $S_{11}(1535)$, $S_{11}(1650)$, $D_{13}(1520)$ and $D_{13}(1700)$
to the pseudoscalar mesons and octet baryons are studied within a chiral constituent quark model.
The effects of the configurations mixing between the states $|N^{2}_{8}P_{M}\\rangle$ and $|N^{4}_{8}P_{M}\\rangle$
are considered, taking into account the breakdown of the $SU(6)\\otimes O(3)$ symmetry.
In addition, possible contributions of the strangeness components in the $S_{11}$ resonances are investigated.
Experimental data for the partial decay widths of the $S_{11}$ and $D_{13}$ resonances are well reproduced.
Predictions for coupling constants of the four nucleon resonances to pseudoscalar mesons and octet baryons, crucial issues in the
photo- and hadron-induced meson production reactions, are reported. |
