Kaonic production of Λ(1405) off deuteron target in chiral dynamics

The K(-)-induced production of Lambda(1405) is investigated in K(-)d -> pi Sigma n reactions based on coupled-channels chiral dynamics, in order to discuss the resonance position of the.(1405) in the (K) over barN channel. We find that the K(-)d -> Lambda(1405)(n) process favors the production of Lambda(1405) initiated by the (K) over barN channel. The present approach indicates that the Lambda(1405)-resonance position is 1420 MeV rather than 1405 MeV in the pi Sigma invariant-mass spectra of K(-)d -> pi Sigma n reactions. This is consistent with an observed spectrum of the K(-) d -> pi(+) Sigma(-)n with 686-844 MeV/c incident K(-) by bubble chamber experiments done in the 70s. Our model also reproduces the measured Lambda(1405) production cross-section.