dorsal/arxiv
View SchemaMultiboson effects in multiparticle production
| Authors | R. Lednicky, V. Lyuboshitz, K. Mikhailov, Yu. Sinyukov, A. Stavinsky, B. Erazmus |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9911055 |
| URL | https://arxiv.org/abs/nucl-th/9911055 |
| DOI | 10.1103/PhysRevC.61.034901 |
| Journal | Phys.Rev. C61 (2000) 034901 |
Abstract
The influence of multiboson effects on pion multiplicities, single-pion spectra and two-pion correlation functions is discussed in terms of an analytically solvable model. The applicability of its basic factorization assumption is clarified. An approximate scaling of the basic observables with the phase space density is demonstrated in the low density (gas) limit. This scaling and also its violation at high densities due to the condensate formation is described by approximate analytical formulae which allow, in principle, for the identification of the multiboson effects among others. For moderate densities indicated by the experimental data, a fast saturation of multiboson effects with the number of contributing cumulants is obtained, allowing for the account of these effects in realistic transport code simulations. At high densities, the spectra are mainly determined by the universal condensate term and the initially narrow Poisson multiplicity distribution approaches a wide Bose-Einstein one. As a result, the intercepts of the inclusive and fixed-$n$ correlation functions (properly normalized to 1 at large relative momenta) approach 2 and 1, respectively and their widths logarithmically increase with the increasing phase space density. It is shown that the neglect of energy-momentum constraints in the model is justified except near a multipion threshold, where these constraints practically exclude the possibility of a very cold condensate production. It is argued that spectacular multiboson effects are likely to be observed only in the rare events containing sufficiently high density (speckle) fluctuations.
{
"annotation_id": "b89fbd78-8e9e-4ea6-9535-abe684f7f669",
"date_created": "2026-03-02T18:00:28.546000Z",
"date_modified": "2026-03-02T18:00:28.546000Z",
"file_hash": "a44a53fd654ade9db5b569248be64e8e48193b55dc7a12f0d429377415038866",
"private": false,
"record": {
"abstract": "The influence of multiboson effects on pion multiplicities, single-pion\nspectra and two-pion correlation functions is discussed in terms of an\nanalytically solvable model. The applicability of its basic factorization\nassumption is clarified. An approximate scaling of the basic observables with\nthe phase space density is demonstrated in the low density (gas) limit. This\nscaling and also its violation at high densities due to the condensate\nformation is described by approximate analytical formulae which allow, in\nprinciple, for the identification of the multiboson effects among others. For\nmoderate densities indicated by the experimental data, a fast saturation of\nmultiboson effects with the number of contributing cumulants is obtained,\nallowing for the account of these effects in realistic transport code\nsimulations. At high densities, the spectra are mainly determined by the\nuniversal condensate term and the initially narrow Poisson multiplicity\ndistribution approaches a wide Bose-Einstein one. As a result, the intercepts\nof the inclusive and fixed-$n$ correlation functions (properly normalized to 1\nat large relative momenta) approach 2 and 1, respectively and their widths\nlogarithmically increase with the increasing phase space density. It is shown\nthat the neglect of energy-momentum constraints in the model is justified\nexcept near a multipion threshold, where these constraints practically exclude\nthe possibility of a very cold condensate production. It is argued that\nspectacular multiboson effects are likely to be observed only in the rare\nevents containing sufficiently high density (speckle) fluctuations.",
"arxiv_id": "nucl-th/9911055",
"authors": [
"R. Lednicky",
"V. Lyuboshitz",
"K. Mikhailov",
"Yu. Sinyukov",
"A. Stavinsky",
"B. Erazmus"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.61.034901",
"journal_ref": "Phys.Rev. C61 (2000) 034901",
"title": "Multiboson effects in multiparticle production",
"url": "https://arxiv.org/abs/nucl-th/9911055"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "356c4ad8-8225-4f92-8857-71a0547ed220",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}