The two Λ(1405) poles from photoproduction data

oleh: Oset Eulogio, Roca Luis

Format: Article
Diterbitkan: EDP Sciences 2015-01-01

Deskripsi

We present results extracting the position of the two Λ(1405) poles from experimental photoproduction data measured recently at different energies in the γp → K+π0Σ0 and γp → K+π±Σ∓ reactions at Jefferson Lab. The analysis is done by means of a chiral dynamics motivated potential but with free parameters, which guarantees analyticity and unitarity in the solutions. With the best result we find the two Λ(1405) poles at about 1352 − 48i MeV and 1419 − 29i MeV.