Meson-baryon s-wave resonances with strangeness -3
نویسندگان
چکیده
منابع مشابه
On the Strangeness −1 S-wave Meson-Baryon Scattering
We consider meson-baryon interactions in S-wave with strangeness −1. This is a nonperturbative sector populated by plenty of resonances interacting in several two-body coupled channels. We study this sector combining a large set of experimental data. The recent experiments are remarkably accurate demanding a sound theoretical description to account for all the data. We employ unitary chiral per...
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In this talk I review recent advances on the structure of the meson and baryon resonances which can be dynamically generated from the interaction of mesons or mesons and baryons. Particular emphasis is put on results involving vector mesons, which bring new light into the nature of some of the observed higher mass mesons and baryons and make predictions for new states.
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We study heavy-light meson resonances with quantum numbers JP = 0+ and JP = 1+ in terms of the non-linear chiral SU(3) Lagrangian. Adjusting the free parameters that arise at subleading order to reproduce the mass of the D(2420) resonance as well as the new states established recently by the BABAR, CLEO and BELLE collaborations we obtain refined masses for the anti-triplet and sextet states. Bo...
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Meson-baryon interactions are the fundamental building blocks to study the structures of baryon resonances and meson properties in few-body nuclear systems. We review the recent progress in the investigation of the meson-baryon interaction in the strangeness S “ ́1 sector and the structure of the Λp1405q resonance. In particular, we present an attempt to construct a realistic KN-πΣ interaction i...
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The s-wave meson-baryon interaction is studied using the lowest-order chiral Lagrangian in a unitary coupled-channels Bethe-Salpeter equation. In the strangeness S = −1 sector the low-energy K−p dynamics leads to the dynamical generation of the Λ(1405) as a K̄N state, along with a good description of the K−p scattering observables. At higher energies, the Λ(1670) is also found to be generated dy...
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ژورنال
عنوان ژورنال: The European Physical Journal A
سال: 2007
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epja/i2006-10241-3