6533b851fe1ef96bd12aa2ca
RESEARCH PRODUCT
Kaonic production of $ \Lambda$ (1405) off deuteron target in chiral dynamics
Takayasu SekiharaEulogi OsetDaisuke Jidosubject
PhysicsNuclear and High Energy PhysicsNuclear Theory010308 nuclear & particles physicsFOS: Physical sciencesFísicaSigmaLambda7. Clean energy01 natural sciencesResonance (particle physics)Spectral lineNuclear Theory (nucl-th)Nuclear physicsDeuteriumPosition (vector)0103 physical sciencesBubble chamberInvariant mass010306 general physicsdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-01 | The European Physical Journal A |