Searching for exotic states in the Nπ K system

摘要

We study the NπK system in order to investigate the possibility of existence of strangeness +1 reso_nance(s). The formalism consists of solving the Faddeev equations with the Nn, srK and KN t-matrices obtained from chiral dynamics. The same formalism, which leads to the finding of several 1/2~+ reso_nances in the corresponding three-body S =-1 channels in the 1400-2000 MeV energy region, results into only one broad bump around 1700 MeV with isospin 0. The amplitudes in isospin 1 and 2 configu_ration do not have any resonant structure.