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Scalar Lambda N and Lambda Lambda interaction in a chiral unitary approach

K. Sasaki·E. Oset·M. J. Vicente Vacas
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Abstract

We study the central part of Lambda N and Lambda Lambda potential by considering the correlated and uncorrelated two-meson exchange besides the omega 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 omega exchange contribution.

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K. Sasaki, E. Oset, M. J. Vicente Vacas. 2006-07-31. Scalar Lambda N and Lambda Lambda interaction in a chiral unitary approach. https://doi.org/10.1103/physrevc.74.064002

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