Structure of $λ^*$(1405) and the $λ^*$-Meson-Baryon Coupling Constants

Details Structure of $λ^*$(1405) and the $λ^*$-Meson-Baryon Coupling Constants Structure of $λ^*$(1405) and the $λ^*$-Meson-Baryon Coupling Constants

2010-08-06

arxiv.org/abs/1008.1177v1

Int.J.Mod.Phys.A26:619-621,2011

Physics

Nuclear Physics

Nuclear Theory

Contributed to MESON2010

Scientific paper

10.1142/S0217751X11052220

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, $\Gamma_{\Lambda(1405)\to (\Sigma \pi)^\circ}$.

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