An approach to chemical freeze-out scenario of identified particle spectra at 200AGeV Au-Au collisions at RHIC

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dc.creatorQian, Wei-Liang
dc.creatorAndrade, Rone
dc.creatorGrassi, Frederique
dc.creatorHama, Yogiro
dc.creatorKodama, Takeshi
dc.date2007-09-06
dc.date2007-09-06
dc.date.accessioned2026-07-07T08:27:55Z
dc.date.available2026-07-07T08:27:55Z
dc.descriptionThermal model fit indicates early chemical freeze-out of multi-strange hadrons with small collective velocities at 200AGeV Au-Au collisions at RHIC. In this work, we present our recent results by SPheRIO hydrodynamical calculations inspired by this picture. In our model, multi-strange hadrons go through chemical freeze-out when the system reaches some temperature close to the phase transition, stopping to make inelastic collisions, and their abundances are therefore determined only by partonic EOS. At a lower temperature thermal freeze-out takes place where elastic collisions are brought to a halt. We calculate the spectra for various hadrons at different centrality windows, with chemical and thermal freeze-out temperature being fit as a function of centrality. As it is shown, the result provides a reasonable panoramic description of the spectra of identified particles. Chemical freeze-out gives good correction of the multiplicity of certain species of particles, especially for multi-strange hadrons.
dc.description13 pages, 13 figures
dc.identifierhttps://arxiv.org/abs/0709.0845
dc.identifierhttp://arxiv.org/abs/0709.0845
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/137439
dc.subjectNuclear Theory
dc.titleAn approach to chemical freeze-out scenario of identified particle spectra at 200AGeV Au-Au collisions at RHIC
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