Scalar isoscalar part of the hyperon-nucleon interaction
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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
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- 6.T.A. Rijken, Y. Yamamoto, arXiv:nucl-th/0603042.Google Scholar