dorsal/arxiv
View SchemaPionic Decay of a Possible d'-Dibaryon
| Authors | K. Itonaga, A. J. Buchmann, Georg Wagner, Amand Faessler |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9608001 |
| URL | https://arxiv.org/abs/nucl-th/9608001 |
| DOI | 10.1016/S0375-9474(96)00278-3 |
| Journal | Nucl.Phys. A609 (1996) 422-436 |
Abstract
The pionic decay of a possible d'-dibaryon in the process d' --> pi + N + N is studied in the microscopic quark shell model and with a single-quark transition operator describing the transition q --> pi + q'. For the d' with quantum numbers J^P=0^-, T=0, we employ a six-quark shell-model wave function with a spatial s^5p [51]_X-configuration with N=1 harmonic oscillator quanta. It is shown that the pionic decay width depends strongly on the mass and size of the d'. In the case that the calculated d' mass is close to the experimental one a small pionic decay width of 0.04 MeV is obtained. This is an order of magnitude smaller than the experimentally suggested value of 0.5 MeV. Two possibilities to improve the calculated width are suggested. The effect of the nonstatic correction term in the transition operator and the influence of the form factor at the decay vertex on the decay width are also discussed.
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"abstract": "The pionic decay of a possible d\u0027-dibaryon in the process d\u0027 --\u003e pi + N + N\nis studied in the microscopic quark shell model and with a single-quark\ntransition operator describing the transition q --\u003e pi + q\u0027. For the d\u0027 with\nquantum numbers J^P=0^-, T=0, we employ a six-quark shell-model wave function\nwith a spatial s^5p [51]_X-configuration with N=1 harmonic oscillator quanta.\nIt is shown that the pionic decay width depends strongly on the mass and size\nof the d\u0027. In the case that the calculated d\u0027 mass is close to the experimental\none a small pionic decay width of 0.04 MeV is obtained. This is an order of\nmagnitude smaller than the experimentally suggested value of 0.5 MeV. Two\npossibilities to improve the calculated width are suggested. The effect of the\nnonstatic correction term in the transition operator and the influence of the\nform factor at the decay vertex on the decay width are also discussed.",
"arxiv_id": "nucl-th/9608001",
"authors": [
"K. Itonaga",
"A. J. Buchmann",
"Georg Wagner",
"Amand Faessler"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0375-9474(96)00278-3",
"journal_ref": "Nucl.Phys. A609 (1996) 422-436",
"title": "Pionic Decay of a Possible d\u0027-Dibaryon",
"url": "https://arxiv.org/abs/nucl-th/9608001"
},
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