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Prog. Theor. Phys. Vol. 66 No. 2 (1981) pp. 572-587

[ Full Text PDF : FREE ACCESS (640K) ]

Short Range Part of Baryon-Baryon Interaction in a Quark Model. II

— Numerical Results for S-Wave —

Makoto Oka and Koichi Yazaki*

Institute for Nuclear Study, University of Tokyo, Tanashi, Tokyo 188
*Department of Physics, University of Tokyo, Tokyo 113

(Received January 24, 1981)

Abstract:

An approach to the short range part of baryon-baryon interaction based on a non-relativistic quark model, proposed and formulated in the previous paper, is applied to the case of S-wave relative motion. Repulsive core like interactions appear in most of the spin(S)-isospin(T) states, including the NN system with (S, T) = (1, 0) and (0, 1), while attractive interactions are predicted for the ΔΔ system with (S, T) = (3, 0) and (1, 0). The interaction is mostly due to the Pauli principle between quarks and the spin-spin term in the quark-quark force, and is insensitive to the confinement term. The effect of meson exchanges, which is not included in the present non-relativistic quark model, is studied by simulating it with a phenomenological local potential. Qualitative behaviours of the S-wave NN phase shifts are reproduced in this way.


URL : http://ptp.ipap.jp/link?PTP/66/572/
DOI : 10.1143/PTP.66.572

[ Full Text PDF : FREE ACCESS (640K) ] Citation:

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