Strong decay of low-lyingS11andD13nucleon resonances to pseudoscalar mesons and octet baryons

Partial decay widths of the nucleon resonances S11(1535), S11(1650), D13(1520) and D13(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 PMiand |N 4 8 PMiare considered, taking into account the breakdown of the SU(6) ⊗ O(3) symmetry. In addition, possible contributions of the strangeness components in the S11 resonances are investigated. Experimental data for the partial decay widths of the S11 and D13 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.