dorsal/arxiv
View Schema$\pi^+$ Emission from Hypernuclei and the Weak $\Delta I=3/2$ Transitions
| Authors | Makoto Oka |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9711049 |
| URL | https://arxiv.org/abs/nucl-th/9711049 |
| DOI | 10.1016/S0375-9474(99)00007-X |
| Journal | Nucl.Phys. A647 (1999) 97-104 |
Abstract
Low energy $\pi^+$ emission in hypernuclear weak decays is studied in the soft pion limit. It is found that the $\pi^+$ decay amplitude is dominated by the $\Delta I=3/2$ part of nonmesonic weak decays according to the soft pion theorem. The ratios, $R(\pi^+/soft \pi^-) $, for light hypernuclei are estimated in the direct quark mechanism, which predicts violation of the $\Delta I=1/2$ rule, and found to be about 1/3 for $^4_{\Lambda}He$.
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"abstract": "Low energy $\\pi^+$ emission in hypernuclear weak decays is studied in the\nsoft pion limit. It is found that the $\\pi^+$ decay amplitude is dominated by\nthe $\\Delta I=3/2$ part of nonmesonic weak decays according to the soft pion\ntheorem. The ratios, $R(\\pi^+/soft \\pi^-) $, for light hypernuclei are\nestimated in the direct quark mechanism, which predicts violation of the\n$\\Delta I=1/2$ rule, and found to be about 1/3 for $^4_{\\Lambda}He$.",
"arxiv_id": "nucl-th/9711049",
"authors": [
"Makoto Oka"
],
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"nucl-th"
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"doi": "10.1016/S0375-9474(99)00007-X",
"journal_ref": "Nucl.Phys. A647 (1999) 97-104",
"title": "$\\pi^+$ Emission from Hypernuclei and the Weak $\\Delta I=3/2$ Transitions",
"url": "https://arxiv.org/abs/nucl-th/9711049"
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