$\sigma$ Exchange in the NN Interaction within the Chiral Unitary Approach

E. Oset; H. Toki; M. Mizobe; T. T. Takahashi

$\sigma$ Exchange in the NN Interaction within the Chiral Unitary Approach

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arxiv nucl-th/0011008 v1 pith:RKEYN7AI submitted 2000-11-02 nucl-th

E. Oset , H. Toki , M. Mizobe , T. T. Takahashi This is my paper · ORCID

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abstract

We study the nucleon-nucleon interaction in the isoscalar-scalar channel using t he chiral unitary approach. The $t$-matrix of the pion-pion scattering in this c hannel is summed up to all orders using the B-S equation. We find that the calcu lated results at long distances are close to those of the $\sigma$-exchange inte raction. In addition, there appears a shorter range repulsion in this channel.

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