dorsal/arxiv
View SchemaRoles of Quarks in Strong and Weak YN Interactions
| Authors | M. Oka, Y. Tani, T. Inoue, K. Sasaki |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9811033 |
| URL | https://arxiv.org/abs/nucl-th/9811033 |
Abstract
The short range parts of the strong and weak hyperon-nucleon interactions are studied with quark substructure of the baryons taken into account. A summary of the quark cluster model calculations of the baryon-baryon interactions is presented. It is pointed out that the spin-flavor symmetry structure determines the qualitative behaviors of the short-range YN interactions. We also show that the spin-orbit YN forces give characteristic behaviors, which are distinct from the meson exchange forces. Weak decays of $\Lambda$ in hypernuclei are described by the direct quark mechanism. We find that the neutron induced nonmesonic decay is enhanced due to the direct quark transition. Importance of the $\Delta I=3/2$ decay amplitudes is emphasized both for the nonmesonic weak decays and the $\pi^+$ emission in the $\Lambda$ decay.
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"date_created": "2026-03-02T18:00:24.521000Z",
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"abstract": "The short range parts of the strong and weak hyperon-nucleon interactions are\nstudied with quark substructure of the baryons taken into account. A summary of\nthe quark cluster model calculations of the baryon-baryon interactions is\npresented. It is pointed out that the spin-flavor symmetry structure determines\nthe qualitative behaviors of the short-range YN interactions. We also show that\nthe spin-orbit YN forces give characteristic behaviors, which are distinct from\nthe meson exchange forces. Weak decays of $\\Lambda$ in hypernuclei are\ndescribed by the direct quark mechanism. We find that the neutron induced\nnonmesonic decay is enhanced due to the direct quark transition. Importance of\nthe $\\Delta I=3/2$ decay amplitudes is emphasized both for the nonmesonic weak\ndecays and the $\\pi^+$ emission in the $\\Lambda$ decay.",
"arxiv_id": "nucl-th/9811033",
"authors": [
"M. Oka",
"Y. Tani",
"T. Inoue",
"K. Sasaki"
],
"categories": [
"nucl-th"
],
"title": "Roles of Quarks in Strong and Weak YN Interactions",
"url": "https://arxiv.org/abs/nucl-th/9811033"
},
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