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The European Physical Journal A

, Volume 31, Issue 4, pp 527–533 | Cite as

Aspects of strangeness -1 meson-baryon scattering

  • J. A. OllerEmail author
  • J. Prades
  • M. Verbeni
QNP 2006

Abstract.

We consider meson-baryon interactions in S-wave with strangeness -1. This is a sector populated by plenty of resonances interacting in several two-body coupled channels. We consider a large set of experimental data, where the recent experiments are remarkably accurate. This requires a sound theoretical description to account for all the data and we employ Unitary Chiral Perturbation Theory up to and including O(p 2). The spectroscopy of our solutions is studied within this approach, discussing the rise of the two Λ(1405)-resonances and of the Λ(1670), Λ(1800), Σ(1480), Σ(1620) and Σ(1750). We finally argue about our preferred fit.

PACS.

13.75.Jz Kaon-baryon interactions 12.39.Fe Chiral Lagrangians 11.80.-m Relativistic scattering theory 11.80.Gw Multichannel scattering 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Departamento de FısicaUniversidad de MurciaMurciaSpain
  2. 2.CAFPE and Departamento de Fısica Teórica y del CosmosUniversidad de GranadaGranadaSpain

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