dorsal/arxiv
View SchemaNear-threshold $K^{+}$ Production in Heavy-ion Collisions
| Authors | Bao-An Li |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9404030 |
| URL | https://arxiv.org/abs/nucl-th/9404030 |
| DOI | 10.1103/PhysRevC.50.2144 |
| Journal | Phys.Rev.C50:2144-2151,1994 |
Abstract
Within a hadronic transport model we study in detail contributions to kaon yields and momentum spectra from various baryon (resonance)-baryon (resonance) and $\pi N$ interactions in heavy-ion collisions at beam energies near the free-space kaon production threshold. It is found that the finite lifetime of baryon resonances affects significantly the shape of kaon spectra, and the high energy parts of the kaon spectra are dominated by kaons from $\pi N\rightarrow \Lambda K^{+}$ processes. $N^{*}(1440)$ resonances are found to contribute about 10\% to the kaon yield. Effects of boosting the Fermi momentum distributions of the two colliding nuclei into their center of mass frame, centrality of the reaction as well as the nuclear equation of state on kaon yields and spectra are also discussed. Model calculations on $K^{+}$, $\pi^{+}$ and $\pi^{-}$ spectra for the reaction of Au+Au at $E_{beam}/A= 1.0$ GeV are compared with the experimental data from the KaoS collaboration.
{
"annotation_id": "99de3207-6821-49dc-94c3-cd1293b3a2d4",
"date_created": "2026-03-02T18:00:14.166000Z",
"date_modified": "2026-03-02T18:00:14.166000Z",
"file_hash": "34cd366f5283b85047914e334434d8294f86ca29d12a5b442a509b2ab72972ad",
"private": false,
"record": {
"abstract": "Within a hadronic transport model we study in detail contributions to kaon\nyields and momentum spectra from various baryon (resonance)-baryon (resonance)\nand $\\pi N$ interactions in heavy-ion collisions at beam energies near the\nfree-space kaon production threshold. It is found that the finite lifetime of\nbaryon resonances affects significantly the shape of kaon spectra, and the high\nenergy parts of the kaon spectra are dominated by kaons from $\\pi N\\rightarrow\n\\Lambda K^{+}$ processes. $N^{*}(1440)$ resonances are found to contribute\nabout 10\\% to the kaon yield. Effects of boosting the Fermi momentum\ndistributions of the two colliding nuclei into their center of mass frame,\ncentrality of the reaction as well as the nuclear equation of state on kaon\nyields and spectra are also discussed. Model calculations on $K^{+}$, $\\pi^{+}$\nand $\\pi^{-}$ spectra for the reaction of Au+Au at $E_{beam}/A= 1.0$ GeV are\ncompared with the experimental data from the KaoS collaboration.",
"arxiv_id": "nucl-th/9404030",
"authors": [
"Bao-An Li"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.50.2144",
"journal_ref": "Phys.Rev.C50:2144-2151,1994",
"title": "Near-threshold $K^{+}$ Production in Heavy-ion Collisions",
"url": "https://arxiv.org/abs/nucl-th/9404030"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "397317f6-a340-43a6-9a1e-c431ffa581d9",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}