dorsal/arxiv
View SchemaLambda collective flow in heavy ion reactions
| Authors | Z. S. Wang, Amand Faessler, C. Fuchs, T. Waindzoch |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9811090 |
| URL | https://arxiv.org/abs/nucl-th/9811090 |
| DOI | 10.1016/S0375-9474(98)00605-8 |
| Journal | Nucl.Phys. A645 (1999) 177-188; Erratum-ibid. A648 (1999) 281 |
Abstract
Collective flow of Lambda hyperons in heavy ion reactions at SIS energies is investigated. It is found that a $\Lambda$ mean field constructed on the basis of the quark model leads to a good description of the experimental data of the in-plane transverse flow of $\Lambda$'s. The attractive mean field can also give rise to an additional "virtual" $\Lambda$ radial flow directed inwards, which is reflected by a "concave" structure of the transverse mass spectrum of the $\Lambda$ hyperons emitted at midrapidity. The $\Lambda$ radial flow is found to exhibit a strong mass dependence: The flow is visible in the Ni+Ni system, but is strongly reduced in the system of Au on Au.
{
"annotation_id": "1e7f9663-5d36-4bfa-84c9-905cea218703",
"date_created": "2026-03-02T18:00:25.252000Z",
"date_modified": "2026-03-02T18:00:25.252000Z",
"file_hash": "de30efb5fb6b04b68f71ec5fdda3b74be05945e23553f4e99b5e9e727acb0cfd",
"private": false,
"record": {
"abstract": "Collective flow of Lambda hyperons in heavy ion reactions at SIS energies is\ninvestigated. It is found that a $\\Lambda$ mean field constructed on the basis\nof the quark model leads to a good description of the experimental data of the\nin-plane transverse flow of $\\Lambda$\u0027s. The attractive mean field can also\ngive rise to an additional \"virtual\" $\\Lambda$ radial flow directed inwards,\nwhich is reflected by a \"concave\" structure of the transverse mass spectrum of\nthe $\\Lambda$ hyperons emitted at midrapidity. The $\\Lambda$ radial flow is\nfound to exhibit a strong mass dependence: The flow is visible in the Ni+Ni\nsystem, but is strongly reduced in the system of Au on Au.",
"arxiv_id": "nucl-th/9811090",
"authors": [
"Z. S. Wang",
"Amand Faessler",
"C. Fuchs",
"T. Waindzoch"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(98)00605-8",
"journal_ref": "Nucl.Phys. A645 (1999) 177-188; Erratum-ibid. A648 (1999) 281",
"title": "Lambda collective flow in heavy ion reactions",
"url": "https://arxiv.org/abs/nucl-th/9811090"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "268d3386-399f-4d36-8d91-e69d2a9427de",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}