dorsal/arxiv
View SchemaS-wave $\pi^0$ Production in pp Collision in a Covariant OBE Model
| Authors | E. Gedalin, A. Moalem, L. Razdolskaya |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9803028 |
| URL | https://arxiv.org/abs/nucl-th/9803028 |
| DOI | 10.1016/S0375-9474(99)00140-2 |
| Journal | Nucl.Phys.A652:287-307,1999 |
Abstract
The total cross section for the pp -> pp pi^0 reaction at energies close to threshold is calculated using a covariant one-boson-exchange model, where a boson B created on one of the incoming protons is converted into a neutral pion on the second. The amplitudes for the conversion processes, B N -> N pi^0, are taken to be the sum of s, u and t-channel pole terms. The main contributions to the primary production amplitude is due to an effective isoscalar sigma meson pole in a t-channel, which is enhanced strongly due to offshellness. With this contribution included the model reproduces, both the scale and energy dependence of the cross section.
{
"annotation_id": "33209828-7c9c-412d-8ff7-049fb6b23a24",
"date_created": "2026-03-02T18:00:22.040000Z",
"date_modified": "2026-03-02T18:00:22.040000Z",
"file_hash": "556325e8226e52154cd11195ab5c6d384da35818930b279f56c65d0dee386943",
"private": false,
"record": {
"abstract": "The total cross section for the pp -\u003e pp pi^0 reaction at energies close to\nthreshold is calculated using a covariant one-boson-exchange model, where a\nboson B created on one of the incoming protons is converted into a neutral pion\non the second. The amplitudes for the conversion processes, B N -\u003e N pi^0, are\ntaken to be the sum of s, u and t-channel pole terms. The main contributions to\nthe primary production amplitude is due to an effective isoscalar sigma meson\npole in a t-channel, which is enhanced strongly due to offshellness. With this\ncontribution included the model reproduces, both the scale and energy\ndependence of the cross section.",
"arxiv_id": "nucl-th/9803028",
"authors": [
"E. Gedalin",
"A. Moalem",
"L. Razdolskaya"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(99)00140-2",
"journal_ref": "Nucl.Phys.A652:287-307,1999",
"title": "S-wave $\\pi^0$ Production in pp Collision in a Covariant OBE Model",
"url": "https://arxiv.org/abs/nucl-th/9803028"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "16588a4c-1266-4d79-9616-bf2845628d05",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}