dorsal/arxiv
View SchemaAntibaryons bound in nuclei
| Authors | I. N. Mishustin, L. M. Satarov, T. J. Buervenich, H. Stoecker, W. Greiner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0404026 |
| URL | https://arxiv.org/abs/nucl-th/0404026 |
| DOI | 10.1103/PhysRevC.71.035201 |
| Journal | Phys.Rev. C71 (2005) 035201 |
Abstract
We study the possibility of producing a new kind of nuclear systems which in addition to ordinary nucleons contain a few antibaryons (antiproton, antilambda, etc.). The properties of such systems are described within the relativistic mean-field model by employing G-parity transformed interactions for antibaryons. Calculations are first done for infinite systems and then for finite nuclei from He to Pb. It is demonstrated that the presence of a real antibaryon leads to a strong rearrangement of a target nucleus resulting in a significant increase of its binding energy and local compression. Noticeable effects remain even after the antibaryon coupling constants are reduced by factor 3-4 compared to G-parity motivated values. We have performed detailed calculations of the antibaryon annihilation rates in the nuclear environment by applying a kinetic approach. It is shown that due to significant reduction of the reaction Q-values, the in-medium annihilation rates should be strongly suppressed leading to relatively long-lived antibaryon-nucleus systems. Multi-nucleon annihilation channels are analyzed too. We have also estimated formation probabilities of bound antibaryon-nucleus systems in antiproton-nucleus reactions and have found that their observation will be feasible at the future GSI antiproton facility. Several observable signatures are proposed. The possibility of producing multi-quark-antiquark clusters is discussed.
{
"annotation_id": "9405ba26-1432-4644-9faa-0037dafae317",
"date_created": "2026-03-02T18:00:01.303000Z",
"date_modified": "2026-03-02T18:00:01.303000Z",
"file_hash": "52a268025fd8d20560e1f00a71ee0e0cb2db523c9f386531131c885fab5bafbf",
"private": false,
"record": {
"abstract": "We study the possibility of producing a new kind of nuclear systems which in\naddition to ordinary nucleons contain a few antibaryons (antiproton,\nantilambda, etc.). The properties of such systems are described within the\nrelativistic mean-field model by employing G-parity transformed interactions\nfor antibaryons. Calculations are first done for infinite systems and then for\nfinite nuclei from He to Pb. It is demonstrated that the presence of a real\nantibaryon leads to a strong rearrangement of a target nucleus resulting in a\nsignificant increase of its binding energy and local compression. Noticeable\neffects remain even after the antibaryon coupling constants are reduced by\nfactor 3-4 compared to G-parity motivated values. We have performed detailed\ncalculations of the antibaryon annihilation rates in the nuclear environment by\napplying a kinetic approach. It is shown that due to significant reduction of\nthe reaction Q-values, the in-medium annihilation rates should be strongly\nsuppressed leading to relatively long-lived antibaryon-nucleus systems.\nMulti-nucleon annihilation channels are analyzed too. We have also estimated\nformation probabilities of bound antibaryon-nucleus systems in\nantiproton-nucleus reactions and have found that their observation will be\nfeasible at the future GSI antiproton facility. Several observable signatures\nare proposed. The possibility of producing multi-quark-antiquark clusters is\ndiscussed.",
"arxiv_id": "nucl-th/0404026",
"authors": [
"I. N. Mishustin",
"L. M. Satarov",
"T. J. Buervenich",
"H. Stoecker",
"W. Greiner"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.71.035201",
"journal_ref": "Phys.Rev. C71 (2005) 035201",
"title": "Antibaryons bound in nuclei",
"url": "https://arxiv.org/abs/nucl-th/0404026"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "d67b9c2b-02cf-4dde-bbff-b54df365c6e1",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}