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Prog. Theor. Phys. Vol. 103 No. 2 (2000) pp. 351-365

[ Full Text PDF : FREE ACCESS (176K) ]

σ Exchange in the NN Interaction within the Chiral Unitary Approach

Eulogio Oset,1,2 Hiroshi Toki,1 Masato Mizobe1 and Toru Tyr Takahashi1

1Research Center for Nuclear Physics (RCNP), Osaka University
Ibaraki 567-0047, Japan
2Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, 46100 Burjassot (Valencia), Spain

(Received July 13, 1999)

Abstract:

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


URL : http://ptp.ipap.jp/link?PTP/103/351/
DOI : 10.1143/PTP.103.351

[ Full Text PDF : FREE ACCESS (176K) ] Citation:

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