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Rapidity Dependence of Charged Particle Yields for Au+Au at sqrt(sNN) = 200 GeV
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Rapidity Dependence of Charged Particle Yields for Au+Au at sqrt(sNN) = 200 GeV
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Yields of charged particles (pi+, pi-, K+, K-, p and p-bar) have been derived from spectra measured with BRAHMS for the reaction Au+Au at sqrt(sNN) = 200 GeV, as a function of rapidity in the range y = 0 to y ~ 3 for the 10% most central events. The yields peak at mid-rapidity with a small decrease in the range |y| < 1 but they drop significantly at higher rapidities except for the protons. At y = 0, the K-/pi- ratio is 0.18 +/- 0.02 (syst), very close to the K+/pi+ ratio equal to 0.19 +/- 0.02 (syst). But at y = 3, K-/pi- drops to 0.12 +/- 0.02 (syst) while K+/pi+ remains constant.
Forward citations
Cited by 1 Pith paper
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An expanding spherical fireball model for light hadron production at RHIC ($\sqrt{s_{\rm NN}}=7.7$--$39$ GeV)
An expanding spherical fireball model with Cooper–Frye freeze-out describes STAR pT spectra of π±, K±, p, p̄ at √sNN=7.7–39 GeV and predicts Gaussian rapidity distributions.
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