Centrality dependence of charged antiparticle to particle ratios near midrapidity in d+Au collisions at {radical}(s{sub NN})=200 GeV
Journal Article
·
· Physical Review. C, Nuclear Physics
- Argonne National Laboratory, Argonne, Illinois 60439-4843 (United States)
- Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States); and others
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 {radical}(s{sub NN})=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{sub {pi}}<1.3 and 0<y{sub K,p}<0.8, where positive rapidity is in the deuteron direction, and for transverse momenta 0.1<p{sub T}{sup {pi}}{sup ,K}<1 GeV/c and 0.3<p{sub T}{sup 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.
- OSTI ID:
- 20695569
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 70, Issue 1; Other Information: DOI: 10.1103/PhysRevC.70.011901; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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