Speaker
Hiroyuki Noumi
(RCNP, Osaka University)
Description
Recently, experimental studies of the kaon-induced reactions on deuteron and helium-3 were carried out at J-PARC. The former experiment reported a resonance pole below the KbarN mass threshold in the deduced S-wave KbarN scattering amplitude in the isospin = 0 channel [1]. The pole is naturally interpreted as a KbarN bound state. The latter experiment reported a bump structure below the KbarNN mass threshold in the Lambda-p invariant mass spectrum, which is naturally interpreted as a KbarNN bound state [2,3]. Based on the measured spectral shapes, a relation between the two observed states will be considered in terms of the KbarN and KbarNN interaction potentials in this presentation.
