Scalar isoscalar part of the hyperon-nucleon interaction
Departamento de Fısica Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Spain
* e-mail: Kenji.Sasaki@ific.uv.es
Accepted: 15 November 2006
Published online: 5 March 2007
We study the central part of the ΛN potential by considering the correlated and uncorrelated two-meson exchange besides the ω exchange contribution. The correlated two-meson is evaluated in a chiral unitary approach. We find that a short-range repulsion is generated by the correlated two-meson potential which also produces an attraction in the intermediate distance region. The uncorrelated two-meson exchange produces a sizeable attraction in all cases which is counterbalanced by ω exchange contribution.
PACS: 13.75.Ev Hyperon-nucleon interactions – / 12.39.Fe Chiral Lagrangians –
© Società Italiana di Fisica and Springer-Verlag, 2007