Production of hyperon resonances induced by kaons on a deuteron target

The K(-)d -> pi Y N reaction is theoretically studied to investigate the K--induced production of the hyperon resonances Sigma(1385) and Lambda(1405). For this purpose, we take into account the p-wave amplitudes for meson-baryon two-body scatterings as well as the s-wave amplitudes. Due to the fact that the hyperon resonances are selectively produced from the (K) over bar N channel in this reaction, the Lambda(1405) peak appears at 1420 MeV, which implies that Lambda(1405) and Sigma(1385) could be separately seen in the missing-mass spectrum of the emitted nucleon in the K(-)d -> nX reaction. The pi Y invariant-mass spectrum in this study is consistent with experimental data both for Sigma(1385) and Lambda(1405). The pion exchange contributions are also included and are found to give a smooth background without distorting the peak structure of the hyperon resonances.