Dynamical Generation of Hyperon Resonances

A. Ramos, E. Oset, C. Bennhold, D. Jido. J. A. Oller, U. G. Meissner

Published 2003-12-04Version 1

In this talk we report on how, using a chiral unitary approach for the meson--baryon interactions, two octets of $J^{\pi}=1/2^-$ baryon states and a singlet are generated dynamically, resulting in the case of strangeness $S=-1$ in two poles of the scattering matrix close to the nominal $\Lambda(1405)$ resonance. We suggest experiments which could show evidence for the existence of these states.