Centrality dependence of charged antiparticle to particle ratios near midrapidity in d+Au collisions at sNN=200GeV

1 July 2004

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 70 (1) , 011901
https://doi.org/10.1103/physrevc.70.011901

Abstract

The ratios of the yields of charged antiparticles to particles have been obtained for pions, kaons, and protons near midrapidity for

d + Au

collisions at

\sqrt{s_{N N}} = 200 GeV

as a function of centrality. The reported values represent the ratio of the yields averaged over the rapidity range of

0.1 < y_{π} < 1.3

and

0 < y_{K, p} < 0.8

, where positive rapidity is in the deuteron direction, and for transverse momenta

0.1 < p_{T}^{π, K} < 1 GeV ∕ c

and

0.3 < p_{T}^{p} < 1 GeV ∕ c

. Within the uncertainties, a lack of centrality dependence is observed in all three ratios. The data are compared to results from other systems and model calculations.

Keywords

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This publication has 25 references indexed in Scilit:

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