dorsal/arxiv
View SchemaMoments of event observable distributions and many-body correlations
| Authors | M. Belkacem, Z. Aouissat, M. Bleicher, H. Stöcker, W. Greiner |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9903017 |
| URL | https://arxiv.org/abs/nucl-th/9903017 |
Abstract
We investigate event-by-event fluctuations for ensembles with non-fixed multiplicity. Moments of event observable distributions, like total energy distribution, total transverse momentum distribution, etc, are shown to be related to the multi-body correlations present in the system. For classical systems, these moments reduce in the absence of any correlations to the moments of particle inclusive momentum distribution. As a consequence, a zero value for the recently introduced $\Phi$-variable is shown to indicate the vanishing of two-body correlations from one part, and of correlations between multiplicity and momentum distributions from the other part. It is often misunderstood as a measure of the degree of equilibration in the system.
{
"annotation_id": "a0d33448-673b-4a40-9572-8d4d2df233bc",
"date_created": "2026-03-02T18:00:25.083000Z",
"date_modified": "2026-03-02T18:00:25.083000Z",
"file_hash": "798334acedffcfbf1ce738448584dc3f20fdb3634eada66bf68e196a1233e7ae",
"private": false,
"record": {
"abstract": "We investigate event-by-event fluctuations for ensembles with non-fixed\nmultiplicity. Moments of event observable distributions, like total energy\ndistribution, total transverse momentum distribution, etc, are shown to be\nrelated to the multi-body correlations present in the system. For classical\nsystems, these moments reduce in the absence of any correlations to the moments\nof particle inclusive momentum distribution. As a consequence, a zero value for\nthe recently introduced $\\Phi$-variable is shown to indicate the vanishing of\ntwo-body correlations from one part, and of correlations between multiplicity\nand momentum distributions from the other part. It is often misunderstood as a\nmeasure of the degree of equilibration in the system.",
"arxiv_id": "nucl-th/9903017",
"authors": [
"M. Belkacem",
"Z. Aouissat",
"M. Bleicher",
"H. St\u00f6cker",
"W. Greiner"
],
"categories": [
"nucl-th",
"hep-ph"
],
"title": "Moments of event observable distributions and many-body correlations",
"url": "https://arxiv.org/abs/nucl-th/9903017"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "9a601359-d678-44ed-93ef-54d10c029344",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}