Anti-particle to particle ratios within the acceptance for each centrality bin: is the number of collisions per deuteron participant, the number in () is the RMS The systematic errors in are 30%, 20%, 15%, 10% in order of increasing centrality. The errors on the final ratios represent the statistical (first number) and point-to-point systematic errors (second number). The systematic scale errors are +/-0.008, +/-0.02, and +/- 0.02 for pions, kaons, and protons, respectively. Trigger Cent.% / / /

dAVertex 60-100 2.2(1.3) 0.995+/-0.015+/-0.017 0.97+/-0.07+/-0.03 0.84+/-0.04+/-0.04 dAVertex 30-60 4.0(1.8) 1.004+/-0.007+/-0.017 0.95+/-0.03+/-0.03 0.80+/-0.02+/-0.03 dAVertex 10-30 6.1(1.8) 1.008+/-0.006+/-0.017 0.97+/-0.02+/-0.03 0.83+/-0.02+/-0.03 dAVertex 0-10 8.1(2.0) 1.016+/-0.007+/-0.017 0.97+/-0.03+/-0.03 0.86+/-0.02+/-0.03 dAPeriph 60-100 2.2(1.3) 0.996+/-0.008+/-0.017 1.02+/-0.04+/-0.04 0.86+/-0.03+/-0.03 dAPeriph 30-60 3.7(1.6) 1.014+/-0.007+/-0.017 0.97+/-0.03+/-0.04 0.82+/-0.02+/-0.03 Au+Au (0-12% Central from Phys. Rev. C 67, 021901R (2003) ) 5.2 1.025+/-0.006+/-0.018 0.95+/-0.03+/-0.03 0.73+/-0.02+/-0.03 Model numbers for d+Au /

Cent.% HIJING RQMD AMPT 60-100 2.2 0.916+/-0.014 0.893+/-0.015 0.865+/-0.012 30-60 4.0 0.893+/-0.008 0.815+/-0.009 0.843+/-0.009 10-30 6.1 0.860+/-0.008 0.779+/-0.009 0.788+/-0.007 0-10 8.1 0.840+/-0.009 0.762+/-0.011 0.764+/-0.009