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arXiv · 1008.1177

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

Chunsheng An·Bijan Saghai
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Abstract

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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Chunsheng An, Bijan Saghai. 2010-08-06. Structure of $\lambda^*$(1405) and the $\lambda^*$-Meson-Baryon Coupling Constants. https://doi.org/10.1142/s0217751x11052220

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