dorsal/arxiv
View SchemaPhase-Space Description of Momentum Spectra in Relativistic Heavy-Ion Collisions
| Authors | Werner Deinet, Dirk H. Rischke |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0507076 |
| URL | https://arxiv.org/abs/nucl-th/0507076 |
| DOI | 10.1016/j.nuclphysa.2005.10.013 |
| Journal | Nucl.Phys.A765:226-251,2006 |
Abstract
We consider a phase-space model for particle production in nuclear collisions. Once the multiplicities of the individual particle species are known, single-inclusive momentum spectra can be computed after making simplifying assumptions for the matrix element for multiparticle production. Comparison of the calculated spectra with data for pions and kaons from central Pb+Pb collisions at E_{Lab}=158 AGeV reveals a residual longitudinal phase-space dominance in the final state of the reaction. We account for this by modifying the isotropic, relativistic invariant phase space in a way which retains boost invariance in beam direction but suppresses large transverse momenta. Adjusting a single parameter, we obtain a reasonably good description of transverse momentum and rapidity spectra for both pions and kaons.
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"abstract": "We consider a phase-space model for particle production in nuclear\ncollisions. Once the multiplicities of the individual particle species are\nknown, single-inclusive momentum spectra can be computed after making\nsimplifying assumptions for the matrix element for multiparticle production.\nComparison of the calculated spectra with data for pions and kaons from central\nPb+Pb collisions at E_{Lab}=158 AGeV reveals a residual longitudinal\nphase-space dominance in the final state of the reaction. We account for this\nby modifying the isotropic, relativistic invariant phase space in a way which\nretains boost invariance in beam direction but suppresses large transverse\nmomenta. Adjusting a single parameter, we obtain a reasonably good description\nof transverse momentum and rapidity spectra for both pions and kaons.",
"arxiv_id": "nucl-th/0507076",
"authors": [
"Werner Deinet",
"Dirk H. Rischke"
],
"categories": [
"nucl-th",
"hep-ph",
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],
"doi": "10.1016/j.nuclphysa.2005.10.013",
"journal_ref": "Nucl.Phys.A765:226-251,2006",
"title": "Phase-Space Description of Momentum Spectra in Relativistic Heavy-Ion Collisions",
"url": "https://arxiv.org/abs/nucl-th/0507076"
},
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