Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1837602 | Nuclear Physics A | 2013 | 14 Pages |
Abstract
We perform a combined analysis of antikaon–nucleon scattering cross sections and the recent SIDDHARTA kaonic hydrogen data in the framework of a –πY coupled-channel Bethe–Salpeter approach at next-to-leading order in the chiral expansion of the effective potential. We find a precise description of the antikaon–proton scattering amplitudes and are able to extract accurate values of the scattering lengths, and . We also discuss the two-pole structure of the Λ(1405).
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