Résumé du preprint Irfu-10-111
| Irfu-10-111 |
|---|
| Structure of the $\Lambda^*$(1405) and the $\Lambda^*$-Meson-Baryon couplings |
| C.S. An, B. Saghai |
| Within an extended chiral constituent quark model, three- and five-quark structure of the $S_{01}$ resonance $\\Lambda(1405)$ is investigated with respect to the coupling constants $g^2_{\\Lambda^* \\pi \\Sigma}$ and $g^2_{\\Lambda^* \\bar{K} N}$. Our findings corroborate with about 50\\% of five-quark admixture in the $\\Lambda(1405)$ needed in reproducing the strong decay width, $\\Gamma_{\\Lambda(1405)\\to (\\Sigma \\pi)^\\circ}$. |