dorsal/arxiv
View SchemaParticle yield fluctuations and chemical non-equilibrium at RHIC
| Authors | Giorgio Torrieri, Sangyong Jeon, Johann Rafelski |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0503026 |
| URL | https://arxiv.org/abs/nucl-th/0503026 |
| DOI | 10.1103/PhysRevC.74.024901 |
| Journal | Phys.Rev. C74 (2006) 024901 |
Abstract
We study charge fluctuations within the statistical hadronization model. Considering both the particle yield ratios and the charge fluctuations we show that it is possible to differentiate between chemical equilibrium and non-equilibrium freeze-out conditions. As an example of the procedure we show quantitatively how the relative yield ratio $\Lambda/K^-$ together with the normalized net charge fluctuation $v(Q)=\ave{\Delta Q^2}/\ave{\Nch}$ constrain the chemical conditions at freeze-out. We also discuss the influence of the limited detector acceptance on fluctuation measurements, and show how this can be accounted for within a quantitative analysis.
{
"annotation_id": "6ff365f9-fe5c-4dcf-a381-e030172a2f9b",
"date_created": "2026-03-02T18:00:04.613000Z",
"date_modified": "2026-03-02T18:00:04.613000Z",
"file_hash": "f439a71ebd8dd16b4dad53dad3db91f80f10b4deb6a62ac7511b5d5d7a0ce02d",
"private": false,
"record": {
"abstract": "We study charge fluctuations within the statistical hadronization model.\nConsidering both the particle yield ratios and the charge fluctuations we show\nthat it is possible to differentiate between chemical equilibrium and\nnon-equilibrium freeze-out conditions. As an example of the procedure we show\nquantitatively how the relative yield ratio $\\Lambda/K^-$ together with the\nnormalized net charge fluctuation $v(Q)=\\ave{\\Delta Q^2}/\\ave{\\Nch}$ constrain\nthe chemical conditions at freeze-out. We also discuss the influence of the\nlimited detector acceptance on fluctuation measurements, and show how this can\nbe accounted for within a quantitative analysis.",
"arxiv_id": "nucl-th/0503026",
"authors": [
"Giorgio Torrieri",
"Sangyong Jeon",
"Johann Rafelski"
],
"categories": [
"nucl-th",
"hep-ex",
"hep-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.74.024901",
"journal_ref": "Phys.Rev. C74 (2006) 024901",
"title": "Particle yield fluctuations and chemical non-equilibrium at RHIC",
"url": "https://arxiv.org/abs/nucl-th/0503026"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "3e480432-a661-4b87-833c-ab5324968c3e",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}