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Prog. Theor. Phys. Vol. 124 No. 1 (2010) pp. 125-145

Meson-Baryon Potentials by One-Hadron-Exchange Mechanisms with Gaussian Sources

Shoji Shinmura,¹ Masanobu Wada,² Mitsuaki Obu² and Yoshinori Akaishi^2,3

¹Faculty of Engineering, Gifu University, Gifu 501-1193, Japan
²College of Science and Technology, Nihon University, Funabashi 274-8501, Japan
³RIKEN Nishina Center, Wako 351-0198, Japan

(Received March 8, 2010; Revised May 13, 2010)

Abstract:

Meson-baryon potentials in momentum space are proposed on the basis of one-hadron-exchange mechanisms. The Gaussian source parameters and SU(3) coupling constants are determined so as to reproduce the πN and K N scatterings at low energies, fixing all the parameters predetermined in the baryon-baryon potentials proposed previously. Using the same values, we predict the KN-πΛ-πΣ coupled-channel potentials. To explain the experimental cross sections and Λ(1405) as a quasibound state, we need an overall factor of approximately 0.7.

Subject Index : 200, 201, 232
URL : http://ptp.ipap.jp/link?PTP/124/125/
DOI : 10.1143/PTP.124.125

[ Full Text PDF : FREE ACCESS (619K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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