dorsal/arxiv
View SchemaPionic decay of a possible d'-dibaryon and the short-range NN interaction
| Authors | I. T. Obukhovsky, K. Itonaga, Georg Wagner, A. J. Buchmann, Amand Faessler |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9708056 |
| URL | https://arxiv.org/abs/nucl-th/9708056 |
| DOI | 10.1103/PhysRevC.56.3295 |
| Journal | Phys.Rev.C56:3295-3306,1997 |
Abstract
We study the pionic decay of a possible dibaryon d' --> N N \pi in the microscopic quark shell model. The initial d' dibaryon wave function (J^P=0^-, T=0) consists of one 1\hbar\omega six-quark shell-model s^5p[51]_X configuration. The most important final six-quark configurations s^6[6]_X, s^4p^2[42]_X and (s^4p^2-s^52s)[6]_X are properly projected onto the NN channel. The final state NN interaction is investigated by means of two phase-equivalent - but off-shell different - potential models. We demonstrate that the decay width \Gamma_d' depends strongly on the short-range behavior of the NN wave function. In addition, the width \Gamma_d' is very sensitive to the mass and size of the d' dibaryon. For dibaryon masses slightly above the experimentally suggested value M_d'=2.065 GeV, we obtain a pionic decay width of \Gamma_d' = 0.18 - 0.32 MeV close to the experimental value \Gamma_d' = 0.5 MeV.
{
"annotation_id": "241cb25c-4a2d-4b15-b066-8270dab160b6",
"date_created": "2026-03-02T18:00:19.123000Z",
"date_modified": "2026-03-02T18:00:19.123000Z",
"file_hash": "1ff6413e72a0554ed1206d7b0be9a6ded85876f168574e287e39752c39e4e062",
"private": false,
"record": {
"abstract": "We study the pionic decay of a possible dibaryon d\u0027 --\u003e N N \\pi in the\nmicroscopic quark shell model. The initial d\u0027 dibaryon wave function (J^P=0^-,\nT=0) consists of one 1\\hbar\\omega six-quark shell-model s^5p[51]_X\nconfiguration. The most important final six-quark configurations s^6[6]_X,\ns^4p^2[42]_X and (s^4p^2-s^52s)[6]_X are properly projected onto the NN\nchannel. The final state NN interaction is investigated by means of two\nphase-equivalent - but off-shell different - potential models. We demonstrate\nthat the decay width \\Gamma_d\u0027 depends strongly on the short-range behavior of\nthe NN wave function. In addition, the width \\Gamma_d\u0027 is very sensitive to the\nmass and size of the d\u0027 dibaryon.\n For dibaryon masses slightly above the experimentally suggested value\nM_d\u0027=2.065 GeV, we obtain a pionic decay width of \\Gamma_d\u0027 = 0.18 - 0.32 MeV\nclose to the experimental value \\Gamma_d\u0027 = 0.5 MeV.",
"arxiv_id": "nucl-th/9708056",
"authors": [
"I. T. Obukhovsky",
"K. Itonaga",
"Georg Wagner",
"A. J. Buchmann",
"Amand Faessler"
],
"categories": [
"nucl-th",
"astro-ph",
"hep-ph"
],
"doi": "10.1103/PhysRevC.56.3295",
"journal_ref": "Phys.Rev.C56:3295-3306,1997",
"title": "Pionic decay of a possible d\u0027-dibaryon and the short-range NN interaction",
"url": "https://arxiv.org/abs/nucl-th/9708056"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "a8cb4670-2b8f-4d03-affd-5c9a1c1d977a",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}