dorsal/arxiv
View SchemaNucleon pole contributions in $J/\psi\to N \bar{N} \pi$, $p \bar{p} \eta$, $p \bar{p} \eta^{\prime}$ and $p \bar{p} \omega$ decays
| Authors | Wei-Hong Liang, Peng-Nian Shen, Bing-Song Zou, Amand Faessler |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0404024 |
| URL | https://arxiv.org/abs/nucl-th/0404024 |
| DOI | 10.1140/epja/i2004-10007-y |
| Journal | Eur.Phys.J. A21 (2004) 487-500 |
Abstract
Nucleon pole contributions in $J/\psi \to N \bar N \pi$, $p \bar p \eta$, $p \bar p \eta^{\prime}$ and $p \bar{p} \omega$ decays are re-studied. Different contributions due to PS-PS and PS-PV couplings in the $\pi$-N interaction and the effects of $NN\pi$ form factors are investigated in the $J/\psi \to N \bar N \pi$ decay channel. It is found that when the ratio of $|F_0| /|F_M|$ takes small value, without considering the $NN\pi$ form factor, the difference between PS-PS and PS-PV couplings are negligible. However, when the $NN\pi$ form factor is included, this difference is greatly enlarged. The resultant decay widths are sensitive to the form factors. As a conclusion, the nucleon-pole contribution as a background is important in the $J/\psi\to N\bar{N}\pi$ decay and must be accounted. In the $J/\psi\to N\bar{N}\eta$ and $N\bar{N}\eta'$ decays, its contribution is less than 0.1% of the data. In the $J/\psi\to N\bar{N}\omega$ decay, it provides rather important contribution without considering form factors. But the contribution is suppressed greatly when adding the off-shell form factors. Comparing these results with data would help us to select a proper form factor for such kind of decay.
{
"annotation_id": "489a3c61-3774-44e6-b52b-b25293807a03",
"date_created": "2026-03-02T18:00:01.416000Z",
"date_modified": "2026-03-02T18:00:01.416000Z",
"file_hash": "6fa95aa8918bf9435a9c016e55c730bc5ade4a736b9f82f198422576f73c7a06",
"private": false,
"record": {
"abstract": "Nucleon pole contributions in $J/\\psi \\to N \\bar N \\pi$, $p \\bar p \\eta$, $p\n\\bar p \\eta^{\\prime}$ and $p \\bar{p} \\omega$ decays are re-studied. Different\ncontributions due to PS-PS and PS-PV couplings in the $\\pi$-N interaction and\nthe effects of $NN\\pi$ form factors are investigated in the $J/\\psi \\to N \\bar\nN \\pi$ decay channel. It is found that when the ratio of $|F_0| /|F_M|$ takes\nsmall value, without considering the $NN\\pi$ form factor, the difference\nbetween PS-PS and PS-PV couplings are negligible. However, when the $NN\\pi$\nform factor is included, this difference is greatly enlarged. The resultant\ndecay widths are sensitive to the form factors. As a conclusion, the\nnucleon-pole contribution as a background is important in the $J/\\psi\\to\nN\\bar{N}\\pi$ decay and must be accounted. In the $J/\\psi\\to N\\bar{N}\\eta$ and\n$N\\bar{N}\\eta\u0027$ decays, its contribution is less than 0.1% of the data. In the\n$J/\\psi\\to N\\bar{N}\\omega$ decay, it provides rather important contribution\nwithout considering form factors. But the contribution is suppressed greatly\nwhen adding the off-shell form factors. Comparing these results with data would\nhelp us to select a proper form factor for such kind of decay.",
"arxiv_id": "nucl-th/0404024",
"authors": [
"Wei-Hong Liang",
"Peng-Nian Shen",
"Bing-Song Zou",
"Amand Faessler"
],
"categories": [
"nucl-th"
],
"doi": "10.1140/epja/i2004-10007-y",
"journal_ref": "Eur.Phys.J. A21 (2004) 487-500",
"title": "Nucleon pole contributions in $J/\\psi\\to N \\bar{N} \\pi$, $p \\bar{p} \\eta$, $p \\bar{p} \\eta^{\\prime}$ and $p \\bar{p} \\omega$ decays",
"url": "https://arxiv.org/abs/nucl-th/0404024"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "39421925-4532-4f17-8ba8-3cd601dded60",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}