Coupling constants of the S11 resonances to pseudoscalar mesons and octet baryons

Abstract

Abstract.Coupling constants of S 11 (1535) and S 11 (1650) resonances to meson-baryon (πN, ηN, η ′ N, KY ) are investigated in a chiral quark model, complemented by inclusion of five-quark components in those resonances. The known strong decay partial widths of both resonances are well reproduced, provided sizeable strangeness components in the relevant wave functions.