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Scalar isoscalar part of the hyperon-nucleon interaction


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.

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Correspondence to K. Sasaki.

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Sasaki, K., Oset, E. & Vicente Vacas, M.J. Scalar isoscalar part of the hyperon-nucleon interaction. Eur. Phys. J. A 31, 557–559 (2007).

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  • 13.75.Ev Hyperon-nucleon interactions
  • 12.39.Fe Chiral Lagrangians