dorsal/arxiv
View SchemaBranching ratio change in K- absorption at rest and the nature of the Lambda(1405)
| Authors | A. Ohnishi, Y. Nara, V. Koch |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9706084 |
| URL | https://arxiv.org/abs/nucl-th/9706084 |
| DOI | 10.1103/PhysRevC.56.2767 |
| Journal | Phys.Rev.C56:2767-2773,1997 |
Abstract
We investigate in-medium corrections to the branching ratio in K- absorption at rest and their effect on the (positively and negatively) charged pion spectrum. The in-medium corrections are due to Pauli blocking, which arises if the Lambda(1405) is assumed to be a $\bar{K}$-nucleon bound state and leads to a density and momentum dependent mass shift of the Lambda(1405). Requiring that the optical potential as well as the branching ratio are derived from the same elementary T-matrix, we find that the in-medium corrected, density dependent T-matrix gives a better description of the K- absorption reaction than the free, density-independent one. This result suggests that the dominant component of the Lambda(1405) wave function is the $\bar{K}N$ bound state.
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"abstract": "We investigate in-medium corrections to the branching ratio in K- absorption\nat rest and their effect on the (positively and negatively) charged pion\nspectrum. The in-medium corrections are due to Pauli blocking, which arises if\nthe Lambda(1405) is assumed to be a $\\bar{K}$-nucleon bound state and leads to\na density and momentum dependent mass shift of the Lambda(1405). Requiring that\nthe optical potential as well as the branching ratio are derived from the same\nelementary T-matrix, we find that the in-medium corrected, density dependent\nT-matrix gives a better description of the K- absorption reaction than the\nfree, density-independent one. This result suggests that the dominant component\nof the Lambda(1405) wave function is the $\\bar{K}N$ bound state.",
"arxiv_id": "nucl-th/9706084",
"authors": [
"A. Ohnishi",
"Y. Nara",
"V. Koch"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.56.2767",
"journal_ref": "Phys.Rev.C56:2767-2773,1997",
"title": "Branching ratio change in K- absorption at rest and the nature of the Lambda(1405)",
"url": "https://arxiv.org/abs/nucl-th/9706084"
},
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