Chiral dynamics of the $\Lambda(1520)$ in coupled channels tested in the   $K^-p\to\pi\pi\Lambda$ reaction
  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. 
Sourav Sarkar, L. Roca, E. Oset, V. K. Magas and M. J. Vicente Vacas