A model combining one-meson exchange with ANL-Osaka DCC amplitudes predicts observables for pi N to K* MB to examine sub-threshold Lambda and Sigma resonances and their overlaps.
Kaonic production of Lambda(1405) off deuteron target in chiral dynamics
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abstract
The K^- induced production of Lambda(1405) is investigated in K^- d to pi Sigma n reactions based on coupled-channels chiral dynamics, in order to discuss the resonance position of the Lambda(1405) in the KbarN channel. We find that the K^-d to Lambda(1405)n process favors the production of Lambda(1405) initiated by the KbarN 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 to pi Sigma n reactions. This is consistent with an observed spectrum of the K^- d to pi^+ Sigma^- n with 686-844 MeV/c incident K^- by bubble chamber experiments done in the 70's. Our model also reproduces the measured Lambda(1405) production cross section.
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Low-lying $\Lambda$ and $\Sigma$ resonances studied with the forward $K^*$ productions off the proton induced by high-momentum $\pi$ beam
A model combining one-meson exchange with ANL-Osaka DCC amplitudes predicts observables for pi N to K* MB to examine sub-threshold Lambda and Sigma resonances and their overlaps.