dorsal/arxiv
View SchemaFactorization Contributions and the Breaking of the $\Delta I=1/2$ Rule in Weak $\Lambda N\rho$ and $\Sigma N\rho$ Couplings
| Authors | Kim Maltman, Mikhail Shmatikov |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9504006 |
| URL | https://arxiv.org/abs/nucl-th/9504006 |
| DOI | 10.1103/PhysRevC.51.1576 |
| Journal | Phys.Rev.C51:1576-1579,1995 |
Abstract
We compute the modified factorization contributions to the $\Lambda\rightarrow N\rho$ and $\Sigma\rightarrow N\rho$ couplings and demonstrate that these contributions naturally include $\Delta I=3/2$ terms which are comparable ($\simeq 0.4$ to $-0.8$ times) in magnitude to the corresponding $\Delta I=1/2$ terms. As a consequence, we conclude that models which treat vector meson exchange contributions to the weak conversion process $\Lambda N\rightarrow NN$ assuming such weak couplings to satisfy the $\Delta I=1/2$ rule are unlikely to be reliable.
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"abstract": "We compute the modified factorization contributions to the\n$\\Lambda\\rightarrow N\\rho$ and $\\Sigma\\rightarrow N\\rho$ couplings and\ndemonstrate that these contributions naturally include $\\Delta I=3/2$ terms\nwhich are comparable ($\\simeq 0.4$ to $-0.8$ times) in magnitude to the\ncorresponding $\\Delta I=1/2$ terms. As a consequence, we conclude that models\nwhich treat vector meson exchange contributions to the weak conversion process\n$\\Lambda N\\rightarrow NN$ assuming such weak couplings to satisfy the $\\Delta\nI=1/2$ rule are unlikely to be reliable.",
"arxiv_id": "nucl-th/9504006",
"authors": [
"Kim Maltman",
"Mikhail Shmatikov"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.51.1576",
"journal_ref": "Phys.Rev.C51:1576-1579,1995",
"title": "Factorization Contributions and the Breaking of the $\\Delta I=1/2$ Rule in Weak $\\Lambda N\\rho$ and $\\Sigma N\\rho$ Couplings",
"url": "https://arxiv.org/abs/nucl-th/9504006"
},
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