Baryon Number and Electric Charge Fluctuations in Pb+Pb Collisions at SPS energies

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dc.creatorKonchakovski, V. P.
dc.creatorGorenstein, M. I.
dc.creatorBratkovskaya, E. L.
dc.creatorStocker, H.
dc.date2006-06-22
dc.date2006-10-31
dc.date.accessioned2026-07-07T10:26:22Z
dc.date.available2026-07-07T10:26:22Z
dc.descriptionEvent-by-event fluctuations of the net baryon number and electric charge in nucleus-nucleus collisions are studied in Pb+Pb at SPS energies within the HSD transport model. We reveal an important role of the fluctuations in the number of target nucleon participants. They strongly influence all measured fluctuations even in the samples of events with rather rigid centrality trigger. This fact can be used to check different scenarios of nucleus-nucleus collisions by measuring the multiplicity fluctuations as a function of collision centrality in fixed kinematical regions of the projectile and target hemispheres. The HSD results for the event-by-event fluctuations of electric charge in central Pb+Pb collisions at 20, 30, 40, 80 and 158 A GeV are in a good agreement with the NA49 experimental data and considerably larger than expected in a quark-gluon plasma. This demonstrate that the distortions of the initial fluctuations by the hadronization phase and, in particular, by the final resonance decays dominate the observable fluctuations.
dc.description24 pages, 17 figures, to be published in Phys. Rev. C; new results on electric charge fluctuations in central Pb+Pb collisions at SPS energies have been added
dc.identifierhttps://arxiv.org/abs/nucl-th/0606047
dc.identifierhttp://arxiv.org/abs/nucl-th/0606047
dc.identifierPhys.Rev.C74:064911,2006
dc.identifierdoi:10.1103/PhysRevC.74.064911
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176855
dc.subjectNuclear Theory
dc.titleBaryon Number and Electric Charge Fluctuations in Pb+Pb Collisions at SPS energies
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