6533b7d5fe1ef96bd126506f
RESEARCH PRODUCT
EXTRACTION OF THE Λ(1405) POLES FROM π0Σ0 PHOTOPRODUCTION DATA
Luis RocaEulogi Osetsubject
PhysicsScattering amplitudeNuclear physicsParticle physicsAmplitudeBethe–Salpeter equationUnitarityIsospinHyperonLinear combinationFree parameterdescription
In this contribution we review a work where we showed how to extract the position of the two Λ(1405) poles from experimental photoproduction data which have been measured recently in the γp → K+π0Σ0 reaction at Jefferson Lab. Using a potential motivated by chiral dynamics but with free parameters, we solve the Bethe Salpeter equation in the coupled channels [Formula: see text] and πΣ in isospin I=0 and parameterize the amplitude for the photonuclear reaction in terms of a linear combination of the πΣ → πΣ and [Formula: see text] scattering amplitudes in I=0, with a different linear combination for each energy. Good fits to the data are obtained which lead to two poles at 1385 - 68i MeV and 1419 - 22i MeV, similar to those found in the chiral unitary approach.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 | International Journal of Modern Physics: Conference Series |