Phys. Rev. Lett. 90, 102301 (2003) [4 pages]Rapidity Dependence of Charged Antihadron to Hadron Ratios in Au+Au Collisions at √sNN=200 GeVReceived 12 July 2002; published 12 March 2003 We present ratios of the numbers of charged antihadrons to hadrons (pions, kaons, and protons) in Au+Au collisions at √sNN=200 GeV as a function of rapidity in the range y=0–3. While the ratios at midrapidity are approaching unity, the K-/K+ and p̅ /p ratios decrease significantly at forward rapidities. An interpretation of the results within the statistical model indicates a reduction of the baryon chemical potential from μB≈130 MeV at y=3 to μB≈25 MeV at y=0. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.102301
DOI:
10.1103/PhysRevLett.90.102301
PACS:
25.75.Dw
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