Eur. Phys. J. A (2007) 31: 557-559
https://doi.org/10.1140/epja/i2006-10215-5

QNP 2006

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

Received: 8 November 2006
Accepted: 15 November 2006
Published online: 5 March 2007

Abstract

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.