Rapidity and Centrality Dependence of Proton and Anti-proton Production from Au+Au Collisions at sqrt(sNN)=130 GeV
J. Adams et al., Phys. Rev. C 70, 041901(R) (2004).

Figure 1a: Proton differential yields.

Data for |y| < 0.5. Only statistical errors are listed. Systematic errors are +/-10%.
Centrality
0-6% 6-11% 11-18% 18-26% 26-34% 34-45% 45-58% 58-85%
pT [GeV/c] 1/(2π pT) dN/(dy dpT) [GeV-2 c-4]
0.375 6.009 +/- 0.488 4.952 +/- 0.409 4.287 +/- 0.420 3.541 +/- 0.343 2.784 +/- 0.278 2.192 +/- 0.215 1.457 +/- 0.148 0.640 +/- 0.066
0.425 5.733 +/- 0.334 4.747 +/- 0.284 4.246 +/- 0.312 3.496 +/- 0.259 2.743 +/- 0.206 2.074 +/- 0.155 1.454 +/- 0.111 0.599 +/- 0.047
0.475 5.691 +/- 0.213 4.795 +/- 0.188 4.158 +/- 0.212 3.251 +/- 0.169 2.592 +/- 0.137 1.807 +/- 0.097 1.335 +/- 0.073 0.554 +/- 0.032
0.525 5.673 +/- 0.154 4.659 +/- 0.133 3.959 +/- 0.156 3.224 +/- 0.130 2.542 +/- 0.105 1.865 +/- 0.078 1.247 +/- 0.055 0.512 +/- 0.024
0.575 5.618 +/- 0.151 4.619 +/- 0.130 3.891 +/- 0.150 3.090 +/- 0.123 2.437 +/- 0.099 1.816 +/- 0.074 1.190 +/- 0.051 0.450 +/- 0.021
0.625 5.387 +/- 0.091 4.443 +/- 0.081 3.704 +/- 0.104 3.035 +/- 0.087 2.273 +/- 0.068 1.647 +/- 0.051 1.049 +/- 0.034 0.461 +/- 0.016
0.675 5.183 +/- 0.087 4.288 +/- 0.078 3.525 +/- 0.099 2.957 +/- 0.084 2.243 +/- 0.065 1.572 +/- 0.047 0.952 +/- 0.031 0.372 +/- 0.013
0.725 4.959 +/- 0.084 4.025 +/- 0.074 3.278 +/- 0.091 2.640 +/- 0.075 2.032 +/- 0.060 1.470 +/- 0.044 0.917 +/- 0.030 0.351 +/- 0.012
0.775 4.730 +/- 0.034 3.745 +/- 0.031 3.106 +/- 0.055 2.488 +/- 0.045 1.903 +/- 0.037 1.379 +/- 0.029 0.834 +/- 0.019 0.309 +/- 0.008
0.825 4.360 +/- 0.030 3.523 +/- 0.029 2.959 +/- 0.053 2.263 +/- 0.042 1.730 +/- 0.034 1.230 +/- 0.025 0.748 +/- 0.017 0.279 +/- 0.008
0.875 4.083 +/- 0.029 3.273 +/- 0.027 2.618 +/- 0.048 2.121 +/- 0.039 1.645 +/- 0.033 1.096 +/- 0.023 0.665 +/- 0.016 0.243 +/- 0.007
0.925 3.872 +/- 0.029 3.109 +/- 0.027 2.415 +/- 0.044 1.907 +/- 0.036 1.513 +/- 0.031 0.943 +/- 0.021 0.584 +/- 0.014 0.202 +/- 0.006
0.975 3.521 +/- 0.026 2.808 +/- 0.024 2.317 +/- 0.043 1.781 +/- 0.035 1.363 +/- 0.028 0.962 +/- 0.021 0.513 +/- 0.013 0.177 +/- 0.005

Figure 1b: Antiproton differential yields.

Data for |y| < 0.5. Only statistical errors are listed. Systematic errors are +/-10%.
Centrality
0-6% 6-11% 11-18% 18-26% 26-34% 34-45% 45-58% 58-85%
pT [GeV/c] 1/(2π pT) dN/(dy dpT) [GeV-2 c-4]
0.375 4.238 +/- 0.134 3.535 +/- 0.120 3.054 +/- 0.153 2.559 +/- 0.129 2.010 +/- 0.108 1.615 +/- 0.085 1.137 +/- 0.065 0.505 +/- 0.029
0.425 4.247 +/- 0.083 3.488 +/- 0.073 3.064 +/- 0.107 2.621 +/- 0.093 1.986 +/- 0.073 1.562 +/- 0.058 1.025 +/- 0.041 0.484 +/- 0.020
0.475 4.141 +/- 0.036 3.451 +/- 0.035 2.942 +/- 0.069 2.415 +/- 0.057 1.983 +/- 0.050 1.530 +/- 0.039 1.003 +/- 0.028 0.437 +/- 0.013
0.525 4.077 +/- 0.034 3.371 +/- 0.034 2.882 +/- 0.064 2.489 +/- 0.056 1.932 +/- 0.046 1.416 +/- 0.035 0.970 +/- 0.026 0.402 +/- 0.012
0.575 3.920 +/- 0.031 3.288 +/- 0.032 2.777 +/- 0.059 2.389 +/- 0.053 1.771 +/- 0.042 1.315 +/- 0.032 0.884 +/- 0.023 0.361 +/- 0.011
0.625 3.836 +/- 0.031 3.160 +/- 0.030 2.741 +/- 0.058 2.116 +/- 0.046 1.724 +/- 0.041 1.237 +/- 0.030 0.813 +/- 0.022 0.337 +/- 0.010
0.675 3.671 +/- 0.030 3.040 +/- 0.029 2.560 +/- 0.054 2.049 +/- 0.045 1.638 +/- 0.037 1.178 +/- 0.028 0.762 +/- 0.020 0.324 +/- 0.009
0.725 3.487 +/- 0.028 2.880 +/- 0.028 2.421 +/- 0.051 1.917 +/- 0.041 1.493 +/- 0.034 1.102 +/- 0.026 0.652 +/- 0.017 0.271 +/- 0.008
0.775 3.310 +/- 0.027 2.755 +/- 0.027 2.174 +/- 0.046 1.779 +/- 0.038 1.361 +/- 0.031 1.022 +/- 0.024 0.637 +/- 0.017 0.236 +/- 0.007
0.825 3.085 +/- 0.025 2.540 +/- 0.025 2.073 +/- 0.044 1.625 +/- 0.035 1.293 +/- 0.030 0.912 +/- 0.022 0.593 +/- 0.016 0.212 +/- 0.007
0.875 2.895 +/- 0.024 2.314 +/- 0.022 1.848 +/- 0.040 1.500 +/- 0.033 1.212 +/- 0.029 0.802 +/- 0.020 0.508 +/- 0.014 0.195 +/- 0.006
0.925 2.721 +/- 0.023 2.150 +/- 0.021 1.773 +/- 0.039 1.385 +/- 0.031 1.128 +/- 0.027 0.740 +/- 0.019 0.436 +/- 0.012 0.161 +/- 0.005
0.975 2.496 +/- 0.022 2.000 +/- 0.020 1.601 +/- 0.035 1.325 +/- 0.030 0.931 +/- 0.023 0.669 +/- 0.017 0.392 +/- 0.011 0.145 +/- 0.005

Figure 2a: Proton dN/dy.

Combined statistical and bin-to-bin errors due to PID contamination are listed. Systematic errors due to extrapolation into the pT range not covered by the experiment and the uncertainty in the track reconstruction efficiency are +/-25%.
Centrality
0-6% 6-11% 11-18% 18-26% 26-34% 34-45% 45-58% 58-85%
y dN/dy
-0.450 28.30 +/- 1.91 22.28 +/- 1.52 17.53 +/- 1.17 13.31 +/- 0.90 10.87 +/- 0.75 7.46 +/- 0.53 4.51 +/- 0.31 1.69 +/- 0.12
-0.350 27.82 +/- 1.88 22.07 +/- 1.52 17.03 +/- 1.13 13.17 +/- 0.88 10.35 +/- 0.71 6.96 +/- 0.50 4.40 +/- 0.31 1.65 +/- 0.12
-0.250 27.47 +/- 1.56 21.63 +/- 1.26 16.88 +/- 0.96 13.43 +/- 0.77 10.31 +/- 0.60 7.33 +/- 0.45 4.42 +/- 0.26 1.63 +/- 0.10
-0.150 26.96 +/- 1.23 21.59 +/- 1.04 16.33 +/- 0.76 12.69 +/- 0.60 10.13 +/- 0.49 6.97 +/- 0.36 4.11 +/- 0.21 1.57 +/- 0.08
-0.050 26.99 +/- 1.01 21.27 +/- 0.81 16.63 +/- 0.61 12.87 +/- 0.48 9.92 +/- 0.39 7.13 +/- 0.30 4.40 +/- 0.18 1.56 +/- 0.06
0.050 27.17 +/- 1.02 21.37 +/- 0.82 16.93 +/- 0.63 12.87 +/- 0.48 10.35 +/- 0.40 7.20 +/- 0.30 4.39 +/- 0.18 1.67 +/- 0.07
0.150 27.04 +/- 1.28 21.52 +/- 1.04 16.45 +/- 0.77 12.96 +/- 0.61 10.15 +/- 0.49 7.14 +/- 0.37 4.38 +/- 0.22 1.52 +/- 0.08
0.250 27.06 +/- 1.55 21.42 +/- 1.24 16.54 +/- 0.94 12.81 +/- 0.73 10.14 +/- 0.59 7.06 +/- 0.43 4.29 +/- 0.26 1.66 +/- 0.10
0.350 27.77 +/- 1.87 21.26 +/- 1.45 17.05 +/- 1.14 13.15 +/- 0.88 10.41 +/- 0.71 7.17 +/- 0.51 4.15 +/- 0.29 1.64 +/- 0.11
0.450 27.71 +/- 1.87 22.04 +/- 1.51 17.29 +/- 1.16 13.09 +/- 0.88 10.26 +/- 0.71 6.92 +/- 0.50 4.53 +/- 0.32 1.60 +/- 0.11

Figure 2a: Antiproton dN/dy.

Combined statistical and bin-to-bin errors due to PID contamination are listed. Systematic errors due to extrapolation into the pT range not covered by the experiment and the uncertainty in the track reconstruction efficiency are +/-25%.
Centrality
0-6% 6-11% 11-18% 18-26% 26-34% 34-45% 45-58% 58-85%
y dN/dy
-0.450 19.73 +/- 1.33 15.42 +/- 1.06 12.37 +/- 0.85 9.44 +/- 0.65 7.76 +/- 0.55 5.17 +/- 0.38 3.19 +/- 0.23 1.23 +/- 0.09
-0.350 19.78 +/- 1.33 15.64 +/- 1.07 12.08 +/- 0.83 9.44 +/- 0.65 7.57 +/- 0.53 5.37 +/- 0.39 3.42 +/- 0.24 1.27 +/- 0.09
-0.250 19.57 +/- 1.12 15.80 +/- 0.93 12.55 +/- 0.73 9.51 +/- 0.55 7.61 +/- 0.46 5.41 +/- 0.34 3.44 +/- 0.21 1.26 +/- 0.08
-0.150 19.36 +/- 0.92 15.35 +/- 0.75 11.89 +/- 0.58 9.73 +/- 0.47 7.44 +/- 0.37 5.42 +/- 0.29 3.31 +/- 0.17 1.26 +/- 0.06
-0.050 19.41 +/- 0.72 15.47 +/- 0.60 12.07 +/- 0.46 9.53 +/- 0.37 7.70 +/- 0.31 5.56 +/- 0.24 3.40 +/- 0.14 1.34 +/- 0.06
0.050 19.09 +/- 0.71 15.33 +/- 0.59 12.03 +/- 0.47 9.63 +/- 0.37 7.55 +/- 0.30 5.50 +/- 0.24 3.28 +/- 0.14 1.31 +/- 0.05
0.150 19.10 +/- 0.91 15.25 +/- 0.74 11.60 +/- 0.57 9.24 +/- 0.45 7.59 +/- 0.38 5.45 +/- 0.29 3.29 +/- 0.17 1.27 +/- 0.07
0.250 19.56 +/- 1.12 15.70 +/- 0.92 12.46 +/- 0.73 9.33 +/- 0.54 7.51 +/- 0.45 5.09 +/- 0.32 3.22 +/- 0.20 1.29 +/- 0.08
0.350 19.67 +/- 1.33 15.72 +/- 1.08 11.82 +/- 0.81 9.56 +/- 0.65 7.56 +/- 0.53 5.11 +/- 0.37 3.27 +/- 0.23 1.30 +/- 0.09
0.450 19.45 +/- 1.31 15.19 +/- 1.04 12.05 +/- 0.83 9.57 +/- 0.66 7.29 +/- 0.51 5.43 +/- 0.40 3.28 +/- 0.24 1.27 +/- 0.09

Figure 2c: Average of the proton and antiproton <pT>

Only statistical errors are listed. Systematic errors are +/-6%.
y
-0.45 -0.35 -0.25 -0.15 -0.05 0.05 0.15 0.25 0.35 0.45
y < pT > [GeV/c]
58-85% 0.740 +/- 0.010 0.737 +/- 0.010 0.738 +/- 0.010 0.738 +/- 0.010 0.739 +/- 0.010 0.735 +/- 0.010 0.740 +/- 0.010 0.735 +/- 0.010 0.737 +/- 0.010 0.739 +/- 0.010
45-58% 0.807 +/- 0.010 0.802 +/- 0.010 0.804 +/- 0.010 0.807 +/- 0.010 0.803 +/- 0.010 0.802 +/- 0.010 0.805 +/- 0.010 0.808 +/- 0.011 0.808 +/- 0.011 0.805 +/- 0.010
34-45% 0.856 +/- 0.010 0.859 +/- 0.010 0.854 +/- 0.010 0.858 +/- 0.010 0.853 +/- 0.010 0.852 +/- 0.010 0.855 +/- 0.010 0.859 +/- 0.010 0.857 +/- 0.010 0.859 +/- 0.010
26-34% 0.885 +/- 0.009 0.890 +/- 0.009 0.892 +/- 0.009 0.895 +/- 0.009 0.891 +/- 0.009 0.892 +/- 0.009 0.890 +/- 0.009 0.896 +/- 0.009 0.890 +/- 0.009 0.894 +/- 0.009
18-26% 0.880 +/- 0.009 0.884 +/- 0.009 0.882 +/- 0.009 0.885 +/- 0.009 0.883 +/- 0.009 0.883 +/- 0.009 0.886 +/- 0.009 0.884 +/- 0.009 0.881 +/- 0.009 0.881 +/- 0.009
11-18% 0.894 +/- 0.008 0.898 +/- 0.008 0.897 +/- 0.008 0.901 +/- 0.008 0.902 +/- 0.008 0.902 +/- 0.008 0.906 +/- 0.008 0.901 +/- 0.008 0.900 +/- 0.008 0.899 +/- 0.008
5-11% 0.942 +/- 0.008 0.943 +/- 0.008 0.945 +/- 0.008 0.947 +/- 0.008 0.945 +/- 0.008 0.946 +/- 0.008 0.947 +/- 0.008 0.945 +/- 0.008 0.945 +/- 0.008 0.946 +/- 0.008
0-6% 0.960 +/- 0.006 0.962 +/- 0.006 0.964 +/- 0.006 0.967 +/- 0.006 0.965 +/- 0.006 0.965 +/- 0.006 0.968 +/- 0.006 0.966 +/- 0.006 0.963 +/- 0.006 0.964 +/- 0.006

Figure 3: Mid-rapidity (|y|<0.5) proton and antiproton results on dN/dy and <pT>

Fiducial yield is measured for 0.35 < pT < 1.0 GeV/c. Errors listed are statistical. Systematic error bands in figure are +/- 6% for <pT> and +/- 25% for dN/dy.
Proton Antiproton Average Proton dN/dy Antiproton dN/dy
centrality <pT> [MeV] Fiducial Extrapolated Fiducial Extrapolated
58-85% 738 +/- 6 738 +/- 6 738 +/- 6 0.98 +/- 0.01 1.62 +/- 0.02 0.78 +/- 0.01 1.28 +/- 0.01
45-58% 805 +/- 6 806 +/- 6 805 +/- 6 2.51 +/- 0.02 4.36 +/- 0.05 1.91 +/- 0.02 3.31 +/- 0.03
34-45% 857 +/- 6 855 +/- 6 856 +/- 6 3.96 +/- 0.03 7.14 +/- 0.08 2.97 +/- 0.02 5.35 +/- 0.06
26-34% 892 +/- 6 891 +/- 6 892 +/- 6 5.55 +/- 0.04 10.29 +/- 0.10 4.08 +/- 0.03 7.56 +/- 0.07
18-26% 884 +/- 7 882 +/- 7 883 +/- 7 7.16 +/- 0.05 13.03 +/- 0.11 5.22 +/- 0.03 9.50 +/- 0.09
11-18% 900 +/- 8 899 +/- 8 900 +/- 8 8.92 +/- 0.06 16.53 +/- 0.14 6.40 +/- 0.04 11.85 +/- 0.10
6-11% 945 +/- 8 945 +/- 8 945 +/- 8 10.72 +/- 0.04 21.01 +/- 0.19 7.67 +/- 0.02 15.04 +/- 0.14
0-6% 965 +/- 7 964 +/- 7 965 +/- 7 13.17 +/- 0.04 26.37 +/- 0.23 9.35 +/- 0.02 18.72 +/- 0.16

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