Kaon Production and Kaon to Pion Ratio in Au+Au Collisions at sqrt(snn) = 130 GeV
C. Adler et al., Phys. Lett. B 595 (2004) 143.

Fig.1: Tranverse mass distributions for different centralities

dE/dx identified charged kaons:

Only uncorrelated random errors are listed. Data measured for |y|<0.1. Systematic errors are listed in Table 1 of the paper.
Centrality mT-mK[GeV/c2] d2N/(2 pi mT dmT dy) [c4/GeV2]
   K+ K-
58-85% 0.030 1.578 +- 0.223 1.926 +- 0.248
0.049 2.143 +- 0.197 2.028 +- 0.183
0.071 1.901 +- 0.152 1.446 +- 0.131
0.097 1.377 +- 0.109 1.483 +- 0.115
0.126 1.320 +- 0.100 1.304 +- 0.099
0.157 1.059 +- 0.091 1.085 +- 0.091
0.191 0.909 +- 0.072 0.870 +- 0.069
0.227 0.923 +- 0.106 0.772 +- 0.091
0.264 0.745 +- 0.088 0.683 +- 0.081
0.302 0.590 +- 0.079 0.656 +- 0.080
0.342 0.655 +- 0.090 0.528 +- 0.073
0.383 0.452 +- 0.087 0.464 +- 0.108
0.425 0.283 +- 0.092 0.295 +- 0.145
45-58% 0.030 6.264 +- 0.702 3.775 +- 0.501
0.049 5.562 +- 0.462 4.235 +- 0.563
0.071 4.905 +- 0.374 4.095 +- 0.327
0.097 3.816 +- 0.281 3.914 +- 0.300
0.126 3.691 +- 0.257 3.262 +- 0.235
0.157 3.235 +- 0.223 2.893 +- 0.206
0.191 2.875 +- 0.222 2.418 +- 0.180
0.227 2.494 +- 0.278 1.975 +- 0.264
0.264 2.287 +- 0.257 2.241 +- 0.294
0.302 1.975 +- 0.240 1.772 +- 0.243
0.342 1.800 +- 0.281 1.170 +- 0.179
0.383 1.232 +- 0.312 1.335 +- 0.202
0.425 0.881 +- 0.261 0.656 +- 0.220
34-45% 0.030 7.023 +- 0.787 7.125 +- 0.794
0.049 8.179 +- 0.634 7.421 +- 0.605
0.071 7.004 +- 0.492 6.519 +- 0.496
0.097 6.374 +- 0.417 6.092 +- 0.419
0.126 5.704 +- 0.377 5.462 +- 0.363
0.157 5.471 +- 0.369 4.580 +- 0.320
0.191 4.545 +- 0.326 4.495 +- 0.320
0.227 3.767 +- 0.415 3.644 +- 0.540
0.264 3.912 +- 0.428 3.384 +- 0.375
0.302 3.233 +- 0.363 2.716 +- 0.322
0.342 3.087 +- 0.382 2.736 +- 0.349
0.383 2.025 +- 0.314 1.935 +- 0.367
0.425 2.146 +- 0.400 0.990 +- 0.354
26-34% 0.030 11.854 +- 1.213 11.166 +- 1.277
0.049 9.206 +- 0.739 10.785 +- 0.852
0.071 9.270 +- 0.686 9.927 +- 0.707
0.097 9.314 +- 0.624 7.853 +- 0.541
0.126 8.648 +- 0.552 7.613 +- 0.506
0.157 6.993 +- 0.459 6.335 +- 0.432
0.191 6.133 +- 0.401 6.399 +- 0.420
0.227 5.615 +- 0.614 5.316 +- 0.582
0.264 5.505 +- 0.603 4.576 +- 0.509
0.302 4.733 +- 0.543 4.081 +- 0.466
0.342 4.967 +- 0.810 3.078 +- 0.430
0.383 3.446 +- 0.570 2.778 +- 0.433
0.425 2.547 +- 0.542 2.315 +- 0.518
18-26% 0.030 14.667 +- 1.449 11.746 +- 1.287
0.049 16.046 +- 1.197 12.341 +- 0.980
0.071 12.705 +- 0.883 12.552 +- 0.869
0.097 12.671 +- 0.822 10.678 +- 0.709
0.126 10.260 +- 0.663 10.346 +- 0.671
0.157 10.061 +- 0.649 9.215 +- 0.624
0.191 8.126 +- 0.528 8.277 +- 0.555
0.227 7.360 +- 0.790 6.927 +- 0.633
0.264 7.338 +- 0.798 6.776 +- 1.057
0.302 6.172 +- 0.707 6.000 +- 0.953
0.342 6.054 +- 0.761 5.286 +- 0.886
0.383 5.062 +- 0.837 3.737 +- 0.567
0.425 2.586 +- 0.920 3.513 +- 0.679
11-18% 0.030 18.223 +- 1.839 16.103 +- 1.706
0.049 18.917 +- 1.430 17.000 +- 1.263
0.071 17.432 +- 1.193 15.452 +- 1.104
0.097 15.068 +- 0.978 14.218 +- 0.946
0.126 13.666 +- 0.884 13.135 +- 0.854
0.157 13.403 +- 0.852 11.153 +- 0.723
0.191 11.385 +- 0.702 10.358 +- 0.711
0.227 10.412 +- 1.108 8.652 +- 0.936
0.264 8.148 +- 0.890 8.516 +- 1.333
0.302 8.127 +- 0.908 8.126 +- 1.295
0.342 7.182 +- 0.938 5.766 +- 0.976
0.383 5.431 +- 0.823 5.694 +- 0.977
0.425 4.602 +- 1.138 4.432 +- 0.775
6-11% 0.030 22.634 +- 1.436 22.701 +- 1.442
0.049 23.582 +- 1.330 22.520 +- 1.276
0.071 21.632 +- 1.178 19.130 +- 1.052
0.097 19.241 +- 1.030 17.076 +- 0.923
0.126 17.582 +- 0.938 15.993 +- 0.854
0.157 15.642 +- 0.840 14.974 +- 0.805
0.191 13.769 +- 0.734 13.862 +- 0.743
0.227 12.180 +- 1.240 11.877 +- 1.374
0.264 10.598 +- 1.605 9.812 +- 1.509
0.302 9.927 +- 1.022 8.894 +- 0.919
0.342 8.743 +- 0.940 8.003 +- 0.859
0.383 7.609 +- 0.866 6.827 +- 0.785
0.425 5.482 +- 0.787 4.358 +- 1.029
0-6% 0.030 29.889 +- 1.742 26.804 +- 1.587
0.049 30.220 +- 1.637 27.503 +- 1.500
0.071 25.782 +- 1.362 23.720 +- 1.265
0.097 24.528 +- 1.282 21.970 +- 1.152
0.126 21.947 +- 1.144 20.090 +- 1.049
0.157 19.935 +- 1.045 18.471 +- 0.967
0.191 17.799 +- 0.938 16.893 +- 0.893
0.227 15.673 +- 1.584 14.769 +- 1.493
0.264 14.281 +- 1.446 12.954 +- 1.313
0.302 12.270 +- 1.252 10.955 +- 1.119
0.342 9.784 +- 1.023 8.856 +- 0.931
0.383 9.099 +- 1.015 8.300 +- 0.934
0.425 6.285 +- 0.841 6.780 +- 0.900

 

Kink identified charged kaons:

Only statistical errors are listed. Data measured for |y|<0.5. Systematic errors are listed in Table 1 of the paper.
Centrality mT-mK[GeV/c2] d2N/(2 pi mT dmT dy) [c4/GeV2]
   K+ K-
58-85% 0.150 1.356 +- 0.136 1.128 +- 0.117
0.250 0.798 +- 0.084 0.702 +- 0.076
0.350 0.482 +- 0.055 0.460 +- 0.053
0.450 0.454 +- 0.059 0.341 +- 0.047
0.550 0.219 +- 0.032 0.222 +- 0.032
0.650 0.154 +- 0.026 0.124 +- 0.023
0.750 0.092 +- 0.019 0.080 +- 0.017
0.850 0.059 +- 0.016 0.072 +- 0.017
0.950 0.039 +- 0.010 0.047 +- 0.011
1.050 0.029 +- 0.008 0.024 +- 0.007
1.150 0.039 +- 0.012 0.031 +- 0.011
45-58% 0.150 4.032 +- 0.356 3.162 +- 0.290
0.250 2.179 +- 0.205 2.241 +- 0.209
0.350 1.737 +- 0.192 1.713 +- 0.191
0.450 1.048 +- 0.122 1.012 +- 0.118
0.550 0.875 +- 0.111 0.691 +- 0.093
0.650 0.410 +- 0.062 0.409 +- 0.060
0.750 0.347 +- 0.063 0.272 +- 0.054
0.850 0.193 +- 0.039 0.186 +- 0.037
0.950 0.124 +- 0.028 0.095 +- 0.025
1.050 0.050 +- 0.019 0.087 +- 0.024
1.150 0.060 +- 0.020 0.082 +- 0.021
34-45% 0.150 5.476 +- 0.441 5.084 +- 0.412
0.250 3.519 +- 0.295 3.054 +- 0.263
0.350 2.662 +- 0.234 2.106 +- 0.196
0.450 1.896 +- 0.192 1.502 +- 0.159
0.550 1.053 +- 0.116 0.932 +- 0.105
0.650 0.636 +- 0.081 0.592 +- 0.077
0.750 0.515 +- 0.075 0.440 +- 0.068
0.850 0.420 +- 0.069 0.358 +- 0.061
0.950 0.290 +- 0.053 0.165 +- 0.036
1.050 0.228 +- 0.050 0.194 +- 0.045
1.150 0.119 +- 0.031 0.132 +- 0.038
26-34% 0.150 7.074 +- 0.547 6.268 +- 0.494
0.250 6.393 +- 0.560 4.969 +- 0.453
0.350 3.296 +- 0.299 3.000 +- 0.276
0.450 2.837 +- 0.298 2.438 +- 0.265
0.550 1.719 +- 0.187 1.664 +- 0.182
0.650 1.220 +- 0.157 0.951 +- 0.130
0.750 0.927 +- 0.135 0.803 +- 0.123
0.850 0.657 +- 0.106 0.520 +- 0.092
0.950 0.297 +- 0.062 0.290 +- 0.064
1.050 0.378 +- 0.075 0.291 +- 0.063
1.150 0.189 +- 0.049 0.189 +- 0.055
18-26% 0.150 10.186 +- 0.812 9.427 +- 0.758
0.250 7.093 +- 0.595 6.657 +- 0.563
0.350 5.740 +- 0.537 5.195 +- 0.493
0.450 2.906 +- 0.287 2.732 +- 0.274
0.550 2.837 +- 0.305 2.027 +- 0.235
0.650 1.685 +- 0.205 1.328 +- 0.176
0.750 0.943 +- 0.133 0.952 +- 0.131
0.850 0.821 +- 0.144 0.709 +- 0.126
0.950 0.446 +- 0.091 0.467 +- 0.089
1.050 0.602 +- 0.119 0.329 +- 0.089
1.150 0.273 +- 0.074 0.200 +- 0.066
11-18% 0.150 10.954 +- 0.845 10.166 +- 0.791
0.250 8.006 +- 0.680 7.490 +- 0.638
0.350 7.591 +- 0.718 6.999 +- 0.669
0.450 4.777 +- 0.465 3.849 +- 0.395
0.550 3.068 +- 0.380 3.151 +- 0.374
0.650 1.865 +- 0.232 1.672 +- 0.219
0.750 1.574 +- 0.219 1.203 +- 0.187
0.850 0.802 +- 0.128 0.716 +- 0.122
0.950 0.532 +- 0.119 0.728 +- 0.140
1.050 0.348 +- 0.096 0.432 +- 0.095
1.150 0.377 +- 0.107 0.335 +- 0.089
6-11% 0.150 15.674 +- 0.839 13.610 +- 0.737
0.250 11.377 +- 0.644 9.610 +- 0.551
0.350 9.035 +- 0.570 7.919 +- 0.503
0.450 6.184 +- 0.409 5.012 +- 0.339
0.550 3.828 +- 0.268 3.415 +- 0.242
0.650 3.017 +- 0.249 2.807 +- 0.233
0.750 1.868 +- 0.156 1.600 +- 0.138
0.850 1.087 +- 0.100 1.043 +- 0.096
0.950 0.992 +- 0.108 0.915 +- 0.102
1.050 0.822 +- 0.096 0.701 +- 0.084
1.150 0.411 +- 0.057 0.450 +- 0.061
1.250 0.397 +- 0.058 0.351 +- 0.053
1.350 0.214 +- 0.041 0.229 +- 0.043
1.450 0.215 +- 0.042 0.152 +- 0.037
1.550 0.126 +- 0.029 0.114 +- 0.030
0-6% 0.150 18.824 +- 0.909 16.480 +- 0.804
0.250 15.494 +- 0.828 13.647 +- 0.736
0.350 9.446 +- 0.510 8.352 +- 0.456
0.450 6.494 +- 0.379 5.859 +- 0.344
0.550 4.830 +- 0.314 4.505 +- 0.295
0.650 3.254 +- 0.232 3.051 +- 0.221
0.750 2.397 +- 0.190 2.037 +- 0.167
0.850 1.502 +- 0.129 1.373 +- 0.122
0.950 1.012 +- 0.092 0.816 +- 0.080
1.050 0.785 +- 0.095 0.709 +- 0.090
1.150 0.527 +- 0.063 0.517 +- 0.062
1.250 0.490 +- 0.069 0.434 +- 0.063
1.350 0.324 +- 0.051 0.309 +- 0.050
1.450 0.184 +- 0.041 0.184 +- 0.038
1.550 0.124 +- 0.032 0.143 +- 0.033

 

Neutral Ks:

Only statistical errors are listed. Data measured for |y|<0.5. Systematic errors are listed in Table 1 of the paper.
Centrality mT-mK[GeV/c2] d2N/(2 pi mT dmT dy) [c4/GeV2]
58-85% 0.141 0.751 +- 0.112
0.282 0.564 +- 0.059
0.444 0.254 +- 0.020
0.619 0.124 +- 0.010
0.801 0.063 +- 0.005
0.988 0.035 +- 0.004
1.178 0.017 +- 0.002
1.370 0.010 +- 0.002
1.563 0.002 +- 0.001
45-58% 0.141 2.927 +- 0.474
0.282 1.551 +- 0.139
0.444 0.822 +- 0.058
0.619 0.461 +- 0.033
0.801 0.226 +- 0.017
0.988 0.124 +- 0.012
1.178 0.044 +- 0.004
1.370 0.025 +- 0.003
1.563 0.014 +- 0.002
34-45% 0.141 3.639 +- 0.470
0.282 2.794 +- 0.229
0.444 1.324 +- 0.082
0.619 0.711 +- 0.043
0.801 0.356 +- 0.023
0.988 0.192 +- 0.015
1.178 0.102 +- 0.010
1.370 0.048 +- 0.005
1.563 0.021 +- 0.003
26-34% 0.141 6.194 +- 0.880
0.282 4.079 +- 0.331
0.444 2.075 +- 0.128
0.619 1.017 +- 0.060
0.801 0.543 +- 0.036
0.988 0.319 +- 0.024
1.178 0.151 +- 0.014
1.370 0.082 +- 0.009
1.563 0.034 +- 0.005
18-26% 0.141 8.933 +- 1.146
0.282 5.376 +- 0.393
0.444 2.897 +- 0.171
0.619 1.561 +- 0.087
0.801 0.803 +- 0.048
0.988 0.426 +- 0.030
1.178 0.224 +- 0.019
1.370 0.123 +- 0.013
1.563 0.053 +- 0.007
11-18% 0.141 10.958 +- 1.523
0.282 6.180 +- 0.448
0.444 3.532 +- 0.205
0.619 1.790 +- 0.098
0.801 1.023 +- 0.062
0.988 0.456 +- 0.031
1.178 0.262 +- 0.020
1.370 0.154 +- 0.016
1.563 0.059 +- 0.008
6-11% 0.141 12.129 +- 1.813
0.282 8.246 +- 0.704
0.444 4.975 +- 0.340
0.619 2.037 +- 0.124
0.801 1.322 +- 0.089
0.988 0.655 +- 0.051
1.178 0.377 +- 0.035
1.370 0.177 +- 0.020
1.563 0.079 +- 0.011
0-6% 0.141 11.667 +- 1.537
0.282 9.013 +- 0.672
0.444 5.296 +- 0.306
0.619 2.929 +- 0.168
0.801 1.595 +- 0.094
0.988 0.701 +- 0.047
1.178 0.411 +- 0.032
1.370 0.192 +- 0.019
1.563 0.109 +- 0.014

Table 1: Systematic Errors

Summary of systematic errors correlated within each method. Those marked as "separate" are not correlated between different methods, while those marked as "common" are correlated.
dE/dxKinkK0s
On spectra (separate) 5% 10%10%
On spectra (common) 5% 5% 5%
Charged Kaons K0s
On dN/dy (separate) 8% 10%
On dN/dy (common) 5% 5%
On T (separate) 8% 8%

Table 2 and Figure 2: dN/dy and T

The mid-rapidity kaon multiplicity densities (dN/dy) and mT exponential inverse slopes (T in MeV) as a function of negative hadron multiplicity with |η|<0.5 (dNh-/dη). Quoted errors are uncorrelated errors (first) and correlated systematic errors (second). Systematic error on dNh-/dη is 7%.
Centrality bin dNh-/dη K+ K- K0s
dN/dy T [MeV] dN/dy T [MeV] dN/dy T [MeV]
58-85% 17.9 2.46 +/- 0.07 +/- 0.32 241 +/- 7 +/- 19 2.32 +/- 0.06 +/- 0.30 238 +/- 7 +/- 19 1.76 +/- 0.09 +/- 0.26 258 +/- 7 +/- 21
45-58% 47.3 7.23 +/- 0.18 +/- 0.94 242 +/- 6 +/- 19 6.48 +/- 0.17 +/- 0.84 257 +/- 7 +/- 21 5.83 +/- 0.26 +/- 0.87 262 +/- 6 +/- 21
34-45% 78.9 11.8 +/- 0.3 +/- 1.5 265 +/- 6 +/- 21 10.4 +/- 0.2 +/- 0.1.4 250 +/- 6 +/- 20 9.07 +/- 0.34 +/- 1.36 275 +/- 6 +/- 22
26-34% 115.0 17.2 +/- 0.4 +/- 2.2 281 +/- 7 +/- 22 15.5 +/- 0.4 +/- 2.0 268 +/- 7 +/- 21 13.7 +/- 0.5 +/- 2.1 279 +/- 6 +/- 22
18-26% 154.0 23.1 +/- 0.5 +/- 3.0 275 +/- 7 +/- 22 20.8 +/- 0.5 +/- 2.7 271 +/- 7 +/- 22 19.5 +/- 0.7 +/- 2.9 283 +/- 6 +/- 23
11-18% 196.0 28.8 +/- 0.7 +/- 3.7 269 +/- 6 +/- 22 26.4 +/- 0.6 +/- 3.4 274 +/- 7 +/- 22 23.1 +/- 0.8 +/- 3.5 280 +/- 6 +/- 22
6-11% 236.0 38.0 +/- 0.6 +/- 4.9 284 +/- 4 +/- 23 34.5 +/- 0.5 +/- 4.5 283 +/- 4 +/- 23 29.0 +/- 1.2 +/- 4.3 285 +/- 6 +/- 23
0-6% 290.0 46.2 +/- 0.6 +/- 6.0 277 +/- 4 +/- 22 41.9 +/- 0.6 +/- 5.4 277 +/- 4 +/- 22 33.9 +/- 1.1 +/- 5.1 288 +/- 5 +/- 23

Figure 3: K/π

Central 0-6% K/π yield ratios.
sqrt(sNN) [GeV] Open triangles: p+p K+/<π> Closed triangles: p+p K-/<π>
23.30.0966+/-0.00970.0599+/-0.0060
26.0 0.0525+/-0.0048
30.60.0951+/-0.00950.0632+/-0.0063
44.60.0963+/-0.00960.0670+/-0.0067
53.00.0959+/-0.00960.0682+/-0.0068
Filled triangle: pbar+p K/π
300 0.1050+/-0.0200
Central Au+Au K+/π+ Central Au+Au K-/π-
2.70.0270+/-0.0014
3.30.0886+/-0.00230.0072+/-0.0004
3.80.1244+/-0.00300.0157+/-0.0006
4.30.1579+/-0.00480.0254+/-0.0009
4.90.2023+/-0.00510.0387+/-0.0008
8.80.1980+/-0.01300.0750+/-0.0050
12.30.1810+/-0.01100.0860+/-0.0050
17.30.1710+/-0.01100.0970+/-0.0060
130 (this publication) 0.161 +/- 0.002 (stat) +/- 0.024 (syst) 0.146 +/- 0.002 (stat) +/- 0.022 (syst)

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