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

Chunsheng An; Bijan Saghai

doi:10.1142/S0217751X11052220

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

Nuclear Theory 2011-07-28 v1

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

Keywords

lambda(1405) resonance photoproduction charmonium and exotic meson decays scalar mesons

Cite

@article{arxiv.1008.1177,
  title  = {Structure of $\lambda^*$(1405) and the $\lambda^*$-Meson-Baryon Coupling Constants},
  author = {Chunsheng An and Bijan Saghai},
  journal= {arXiv preprint arXiv:1008.1177},
  year   = {2011}
}

Comments

Contributed to MESON2010