Abstract
Ehime OBEP for ΛN and ΣN coupled systems is presented which uses the SU(3) invariant framework for pseudoscalar, scalar and vector nonet mesons and also uses additional elements: σ, κ, Ω and P. Those elements violate the SU(3) invariance. σ and κ represent effective scalar mesons which embody the (ππ) I=0 and ( Kπ) I=1/2 correlations, while Ω and P do effective multimeson states with the quantum numbers of ω and ρ mesons, respectively. The data for ΛN and ΣN observables as well as hypertriton binding energy are reproduced. The Ehime results are compared with the Nijmegen (SC97f) ones and discriminating points are discussed.
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