dorsal/arxiv
View SchemaNuclear Clusters as a Probe for Expansion Flow in Heavy Ion Reactions at 10-15AGeV
| Authors | R. Mattiello, H. Sorge, H. Stöcker, W. Greiner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9607003 |
| URL | https://arxiv.org/abs/nucl-th/9607003 |
| DOI | 10.1103/PhysRevC.55.1443 |
| Journal | Phys.Rev.C55:1443-1454,1997 |
Abstract
A phase space coalescence description based on the Wigner-function method for cluster formation in relativistic nucleus-nucleus collisions is presented. The momentum distributions of nuclear clusters d,t and He are predicted for central Au(11.6AGeV)Au and Si(14.6AGeV)Si reactions in the framework of the RQMD transport approach. Transverse expansion leads to a strong shoulder-arm shape and different inverse slope parameters in the transverse spectra of nuclear clusters deviating markedly from thermal distributions. A clear ``bounce-off'' event shape is seen: the averaged transverse flow velocities in the reaction plane are for clusters larger than for protons. The cluster yields --particularly at low $p_t$ at midrapidities-- and the in-plane (anti)flow of clusters and pions change if suitably strong baryon potential interactions are included. This allows to study the transient pressure at high density via the event shape analysis of nucleons, nucleon clusters and other hadrons.
{
"annotation_id": "099361e4-91c8-4bf8-a504-7ccf9eaa7568",
"date_created": "2026-03-02T18:00:18.467000Z",
"date_modified": "2026-03-02T18:00:18.467000Z",
"file_hash": "db936963ef3b162f562ed9d8fafb73faaea79e42b4cee79b2daeb2b5500f4339",
"private": false,
"record": {
"abstract": "A phase space coalescence description based on the Wigner-function method for\ncluster formation in relativistic nucleus-nucleus collisions is presented. The\nmomentum distributions of nuclear clusters d,t and He are predicted for central\nAu(11.6AGeV)Au and Si(14.6AGeV)Si reactions in the framework of the RQMD\ntransport approach. Transverse expansion leads to a strong shoulder-arm shape\nand different inverse slope parameters in the transverse spectra of nuclear\nclusters deviating markedly from thermal distributions. A clear ``bounce-off\u0027\u0027\nevent shape is seen: the averaged transverse flow velocities in the reaction\nplane are for clusters larger than for protons. The cluster yields\n--particularly at low $p_t$ at midrapidities-- and the in-plane (anti)flow of\nclusters and pions change if suitably strong baryon potential interactions are\nincluded. This allows to study the transient pressure at high density via the\nevent shape analysis of nucleons, nucleon clusters and other hadrons.",
"arxiv_id": "nucl-th/9607003",
"authors": [
"R. Mattiello",
"H. Sorge",
"H. St\u00f6cker",
"W. Greiner"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.55.1443",
"journal_ref": "Phys.Rev.C55:1443-1454,1997",
"title": "Nuclear Clusters as a Probe for Expansion Flow in Heavy Ion Reactions at 10-15AGeV",
"url": "https://arxiv.org/abs/nucl-th/9607003"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "50f18f12-aa52-4850-8590-8a8b2042976d",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}