Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-02-21
Few Body Syst.Suppl.12:209-213,2000
Physics
Nuclear Physics
Nuclear Theory
5 pages, 2 figures, talk presented at 1st Asia-Pacific conference on ``Few-body problems in physics'', Noda/Kashiwa, Japan, Au
Scientific paper
Roles of quark-pair correlations in the baryon structure and the hyperon non-leptonic weak decay are studied within the non-relativistic constituent quark model. We construct the SU(3) ground state baryons by solving the three body problem rigorously with the confinement force and the short range spin-dependent attraction. We emphasize the importance of the $s=0$ quark-quark correlation to reproduce the $\Delta I=1/2$ enhancement of the hyperon decay, and demonstrate that resulting static properties as well as the decay amplitudes agree with the experiments, if we deal with the $s=0$ correlation properly. Special attention is also put on the consequences of the SU(6) spin-flavor symmetry breaking due to the $s=0$ correlation. Calculated magnetic moments are the almost same as the naive SU(6) predictions in spite of the existence of the strong correlations.
Hiyama Emiko
Kamimura Masayasu
Suzuki Kaori
Toki Hiroshi
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