Multiplicity Fluctuations in Proton-Proton and Nucleus-Nucleus Collisions

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dc.creatorKonchakovski, V. P.
dc.creatorGorenstein, M. I.
dc.creatorBratkovskaya, E. L.
dc.date2007-03-15
dc.date2007-05-24
dc.date.accessioned2026-07-07T11:03:32Z
dc.date.available2026-07-07T11:03:32Z
dc.descriptionWe study the scaled variances of multiplicity fluctuations in nucleus-nucleus collisions at SPS and RHIC energies within the HSD transport model. The HSD results are compared with proton-proton data and with predictions of the hadron-resonance gas statistical model. We find that the HSD scaled variances $ω_i$ for negatively, positively, and all charged hadrons in central nucleus-nucleus collisions remain close to the $ω_i$ values in proton-proton collisions and increase with collision energy as the corresponding multiplicities per participating nucleon. The statistical model predicts very different behavior of $ω_i$. However, a comparison with preliminary NA49 data for the most central Pb+Pb collisions at SPS energies does not permit to distinguish the HSD and statistical model results. New measurements of the multiplicity fluctuations in nucleus-nucleus collisions in a wide energy region with large acceptance are needed to allow for a proper determination of the underlying dynamics.
dc.description9 pages, 4 figures, Phys. Lett. B, in press
dc.identifierhttps://arxiv.org/abs/nucl-th/0703052
dc.identifierhttp://arxiv.org/abs/nucl-th/0703052
dc.identifierPhys.Lett.B651:114-118,2007
dc.identifierdoi:10.1016/j.physletb.2007.06.032
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188627
dc.subjectNuclear Theory
dc.titleMultiplicity Fluctuations in Proton-Proton and Nucleus-Nucleus Collisions
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