dorsal/arxiv
View SchemaThreshold meson production in nucleon-nucleon collisions
| Authors | J. Haidenbauer, Ch. Hanhart, J. Speth |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9607016 |
| URL | https://arxiv.org/abs/nucl-th/9607016 |
| Journal | Acta Phys.Polon.B27:2893-2910,1996 |
Abstract
A brief overview on recent model calculations for near threshold pion production in nucleon-nucleon collisions is given. Results from our own investigations of the reactions $pp \rightarrow pp\pi ^0$ and $pn \rightarrow d\pi^0$ are presented. Direct production, heavy meson exchange and pion rescattering are taken into account. For the latter a T-matrix obtained from a microscopic model of the $\pi N$ interaction is employed. We obtain a significant contribution from rescattering, but not enough to describe the data for $pp \to pp\pi^0$. The missing production rate can be provided by heavy meson exchanges. For the first time the effect of off--shell rescattering is investigated for the reaction $pn \rightarrow d\pi^0$. Isoscalar rescattering in combination with isovector rescattering is able to describe the s-wave production data. We confirm that heavy meson exchanges are negligible in this reaction.
{
"annotation_id": "d15450de-4323-492b-87d3-d286b649df39",
"date_created": "2026-03-02T18:00:18.208000Z",
"date_modified": "2026-03-02T18:00:18.208000Z",
"file_hash": "097bee23891454b5d126301a2a25a784770e4d12ecdb7a90d96054ea1145b9f1",
"private": false,
"record": {
"abstract": "A brief overview on recent model calculations for near threshold pion\nproduction in nucleon-nucleon collisions is given. Results from our own\ninvestigations of the reactions $pp \\rightarrow pp\\pi ^0$ and $pn \\rightarrow\nd\\pi^0$ are presented. Direct production, heavy meson exchange and pion\nrescattering are taken into account. For the latter a T-matrix obtained from a\nmicroscopic model of the $\\pi N$ interaction is employed. We obtain a\nsignificant contribution from rescattering, but not enough to describe the data\nfor $pp \\to pp\\pi^0$. The missing production rate can be provided by heavy\nmeson exchanges. For the first time the effect of off--shell rescattering is\ninvestigated for the reaction $pn \\rightarrow d\\pi^0$. Isoscalar rescattering\nin combination with isovector rescattering is able to describe the s-wave\nproduction data. We confirm that heavy meson exchanges are negligible in this\nreaction.",
"arxiv_id": "nucl-th/9607016",
"authors": [
"J. Haidenbauer",
"Ch. Hanhart",
"J. Speth"
],
"categories": [
"nucl-th"
],
"journal_ref": "Acta Phys.Polon.B27:2893-2910,1996",
"title": "Threshold meson production in nucleon-nucleon collisions",
"url": "https://arxiv.org/abs/nucl-th/9607016"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "52e68930-69f1-467b-84c4-aaa30936763f",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}