Chiral dynamics of the $Λ(1520)$ in coupled channels tested in the $K^-p\toππΛ$ reaction

Sourav Sarkar, L. Roca, E. Oset, V. K. Magas, M. J. Vicente Vacas

Published 2005-12-20Version 1

The $\Lambda(1520)$ resonance is generated dynamically in a unitary coupled channel framework with the $\pi\Sigma^*$ and $K\Xi^*$ channels in s-wave and $\pi\Sigma$ and $\bar K N$ channels in d-wave. The dynamics of this resonance close to and above threshold is then tested through the reactions $K^-p\to\pi\pi\Lambda$ and a good agreement with the experimentally measured cross section is observed.