dorsal/arxiv
View Schema${\bar\Lambda}/{\bar p}$ ratios in heavy ion collisions at 11.6 AGeV/c
| Authors | G. J. Wang, G. Welke, R. Bellwied, C. Pruneau |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9807036 |
| URL | https://arxiv.org/abs/nucl-th/9807036 |
Abstract
We attempt to explain the ${\bar \Lambda}/\bar p$ ratios measured in heavy ion collisions at $11.6~{\rm A\cdot GeV}/c$ beam momentum within a hadronic framework. This ratio is enhanced relative to corresponding ratios in $pp$ collisions, and is large when compared with thermal fits to heavy ion data. Using a detailed cascade calculation, we show that different annihilation cross--sections of $\bar \Lambda$'s and $\bar p$'s, and the net conversion of $\bar p$'s to $\bar \Lambda$'s, do not account for the enhancement in central collisions. For larger impact parameters, however, hadronic mechanisms may well suffice to produce the observed enhancement. Uncertainties in elementary cross--sections and formation times are considered.
{
"annotation_id": "181b51d8-c3b8-4e72-8499-0ed0ec731b80",
"date_created": "2026-03-02T18:00:22.365000Z",
"date_modified": "2026-03-02T18:00:22.365000Z",
"file_hash": "f89d092dfea0f4b5a8ef126b3bfde0f101ddc915e8f2956c35c473368d0958f8",
"private": false,
"record": {
"abstract": "We attempt to explain the ${\\bar \\Lambda}/\\bar p$ ratios measured in heavy\nion collisions at $11.6~{\\rm A\\cdot GeV}/c$ beam momentum within a hadronic\nframework. This ratio is enhanced relative to corresponding ratios in $pp$\ncollisions, and is large when compared with thermal fits to heavy ion data.\nUsing a detailed cascade calculation, we show that different annihilation\ncross--sections of $\\bar \\Lambda$\u0027s and $\\bar p$\u0027s, and the net conversion of\n$\\bar p$\u0027s to $\\bar \\Lambda$\u0027s, do not account for the enhancement in central\ncollisions. For larger impact parameters, however, hadronic mechanisms may well\nsuffice to produce the observed enhancement. Uncertainties in elementary\ncross--sections and formation times are considered.",
"arxiv_id": "nucl-th/9807036",
"authors": [
"G. J. Wang",
"G. Welke",
"R. Bellwied",
"C. Pruneau"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"title": "${\\bar\\Lambda}/{\\bar p}$ ratios in heavy ion collisions at 11.6 AGeV/c",
"url": "https://arxiv.org/abs/nucl-th/9807036"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "e4182819-eadb-4951-814b-85a974f4cfbb",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}