Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV

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dc.creatorPHENIX Collaboration
dc.creatorAdler, S. S.
dc.date2003-07-28
dc.date.accessioned2026-07-07T12:04:05Z
dc.date.available2026-07-07T12:04:05Z
dc.descriptionThe centrality dependence of transverse momentum distributions and yields for pi^+/-, K^+/-, p and p^bar in Au+Au collisions at sqrt(s_NN) = 200 GeV at mid-rapidity are measured by the PHENIX experiment at RHIC. We observe a clear particle mass dependence of the shapes of transverse momentum spectra in central collisions below ~ 2 GeV/c in p_T. Both mean transverse momenta and particle yields per participant pair increase from peripheral to mid-central and saturate at the most central collisions for all particle species. We also measure particle ratios of pi^-/pi^+, K^-/K^+, p^bar/p, K/pi, p/pi and p^bar/pi as a function of p_T and collision centrality. The ratios of equal mass particle yields are independent of p_T and centrality within the experimental uncertainties. In central collisions at intermediate transverse momenta ~ 1.5-4.5 GeV/c, proton and anti-proton yields constitute a significant fraction of the charged hadron production and show a scaling behavior different from that of pions.
dc.description325 authors, 32 pages text, 24 figures, 19 tables, RevTeX 4. To be submitted to Physical Review C as a regular article. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html
dc.identifierhttps://arxiv.org/abs/nucl-ex/0307022
dc.identifierhttp://arxiv.org/abs/nucl-ex/0307022
dc.identifierPhys.Rev.C69:034909,2004
dc.identifierdoi:10.1103/PhysRevC.69.034909
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/208011
dc.subjectNuclear Experiment
dc.titleIdentified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
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