Observation of $\pi^+\pi^-\pi^+\pi^-$ photoproduction in ultraperipheral heavy-ion collisions at $\sqrt{s_{NN}}$ = 200 GeV at the STAR detector
 
 Phys. Rev. C 81, 044901 (2010) [9 pages]
arXiv: 0912.0604


Fig. 2
pT (GeV/c)
 Data       
Error on Data
 Simulation
 background
 Error on Bkgd
0.01 38 6.16441 31.3925 0 0
0.03 97 9.84886 119.453 2 1.41421
0.05 124 11.1355 136.239 0 0
0.07 93 9.64365 95.7694 10 3.16228
0.09 59 7.68115 52.116 6 2.44949
0.11 50 7.07107 26.0301 10 3.16228
0.13 43 6.55744 13.1547 11 3.31662
0.15 43 6.55744 7.01024 12 3.4641
0.17 34 5.83095 5.64171 14 3.74166
0.19 41 6.40312 3.46323 20 4.47214
0.21 33 5.74456 2.06676 19 4.3589
0.23 37 6.08276 1.6199 9 3
0.25 21 4.58258 1.11717 20 4.47214
0.27 40 6.32456 0.754089 22 4.69042
0.29 34 5.83095 0.530656 20 4.47214
0.31 31 5.56776 0.418939 15 3.87298
0.33 32 5.65685 0.195505 13 3.60555
0.35 35 5.91608 0.0837877 22 4.69042
0.37 37 6.08276 0.279292 22 4.69042
0.39 40 6.32456 0.279292 18 4.24264
0.41 31 5.56776 0.36308 21 4.58258
0.43 26 5.09902 0.111717 24 4.89898
0.45 30 5.47723 0.223434 20 4.47214
0.47 32 5.65685 0.195505 18 4.24264
0.49 26 5.09902 0.0837877 21 4.58258
0.51 29 5.38516 0.139646 19 4.3589
0.53 29 5.38516 0.0279292 17 4.12311
0.55 22 4.69042 0.111717 21 4.58258
0.57 22 4.69042 0.111717 14 3.74166
0.59 31 5.56776 0 15 3.87298
0.61 34 5.83095 0.0837877 15 3.87298
0.63 16 4 0.0279292 20 4.47214
0.65 27 5.19615 0.0279292 16 4
0.67 16 4 0.0558585 27 5.19615
0.69 17 4.12311 0.0279292 18 4.24264
0.71 21 4.58258 0.0558585 15 3.87298

Fig. 3
Inv Mass (GeV/c^2)
 Unlike-Sign Data
 Unlike-Sign Error
 Unlike-Sign Sim
 Like-Sign Data
 Like-Sign Error
 Like-Sign Sim
0.225 0 0 0 0 0 0
0.255 0 0 0 0 0 0
0.285 34 5.83095 66.6356 40 6.32456 28.4821
0.315 67 8.18535 89.2334 51 7.14143 51.5494
0.345 77 8.77496 76.8077 72 8.48528 51.4869
0.375 70 8.3666 74.3977 58 7.61577 51.925
0.405 80 8.94427 71.2991 63 7.93725 50.6731
0.435 84 9.16515 75.4306 48 6.9282 49.4837
0.465 87 9.32738 77.2459 45 6.7082 49.4837
0.495 99 9.94987 81.127 58 7.61577 49.9845
0.525 100 10 84.2882 41 6.40312 50.2662
0.555 93 9.64365 87.4807 46 6.78233 49.0142
0.585 95 9.74679 94.1787 56 7.48331 47.2928
0.615 109 10.4403 91.3305 58 7.61577 47.5745
0.645 99 9.94987 98.404 55 7.4162 47.5432
0.675 121 11 105.478 45 6.7082 46.2286
0.705 126 11.225 121.065 37 6.08276 44.1003
0.735 147 12.1244 137.747 45 6.7082 39.781
0.765 134 11.5758 140.501 45 6.7082 37.5588
0.795 115 10.7238 122.849 32 5.65685 33.2395
0.825 83 9.11043 92.8328 31 5.56776 29.3272
0.855 73 8.544 64.7263 23 4.79583 27.5431
0.885 37 6.08276 49.2959 19 4.3589 23.7246
0.915 44 6.63325 35.1801 15 3.87298 20.2505
0.945 25 5 28.576 16 4 18.3099
0.975 36 6 23.5994 3 1.73205 16.6511
1.005 12 3.4641 19.5932 14 3.74166 13.1456
1.035 13 3.60555 16.9328 11 3.31662 12.4257
1.065 8 2.82843 13.9281 4 2 10.1722
1.095 13 3.60555 11.4867 4 2 8.85762
1.125 5 2.23607 11.9562 6 2.44949 8.04384
1.155 9 3 9.70269 8 2.82843 6.85448
1.185 8 2.82843 8.41943 4 2 6.79188
1.215 8 2.82843 7.07357 5 2.23607 6.1033
1.245 2 1.41421 6.2598 1 1 4.72615
1.275 3 1.73205 5.60252 1 1 4.47576
1.305 5 2.23607 5.32083 1 1 4.31926
1.335 5 2.23607 4.53835 1 1 3.31769
1.365 1 1 4.25666 0 0 3.28639
1.395 3 1.73205 3.78718 3 1.73205 2.84821
1.425 0 0 3.59938 1 1 2.12833
1.455 0 0 2.72301 0 0 1.94054
1.485 2 1.41421 2.41002 1 1 1.87794
1.515 1 1 2.03443 0 0 1.18936
1.545 0 0 2.03443 0 0 1.18936
1.575 0 0 1.53365 0 0 0.907671
1.605 3 1.73205 1.53365 0 0 0.970269
1.635 0 0 1.56495 0 0 0.688578

Fig. 4
Inv Mass (GeV/c^2) Lightest Unlike-Sign Data
 Lightest Unlike-Sign Error
 Lightest Unlike-Sign Sim
 Recoil Unlike-Sign Data
 Recoil UnLike-Sign Error
 Recoil UnLike-Sign Sim
0.225 0 0 0 0 0 0
0.255 0 0 0 0 0 0
0.285 34 5.83095 64.3185 0 0 0
0.315 59 7.68115 79.3156 4 2 0.564747
0.345 61 7.81025 60.0201 10 3.16228 1.31774
0.375 46 6.78233 53.0549 9 3 2.25899
0.405 48 6.9282 44.7092 12 3.4641 2.22761
0.435 51 7.14143 42.2306 7 2.64575 3.45123
0.465 33 5.74456 38.7793 13 3.60555 5.01998
0.495 42 6.48074 34.3868 7 2.64575 6.49459
0.525 32 5.65685 29.6492 17 4.12311 7.81234
0.555 34 5.83095 24.6606 15 3.87298 10.4792
0.585 20 4.47214 19.6407 15 3.87298 13.3343
0.615 18 4.24264 12.8951 25 5 16.66
0.645 17 4.12311 10.8871 21 4.58258 22.8409
0.675 9 3 7.12209 25 5 29.461
0.705 4 2 6.1181 37 6.08276 40.2226
0.735 12 3.4641 3.63948 43 6.55744 52.6784
0.765 8 2.82843 2.57274 51 7.14143 62.6242
0.795 2 1.41421 1.47462 44 6.63325 58.3886
0.825 3 1.73205 0.627497 34 5.83095 45.368
0.855 0 0 0.376498 25 5 32.2847
0.885 1 1 0.125499 13 3.60555 23.7194
0.915 0 0 0.156874 16 4 15.3423
0.945 0 0 0.0313749 8 2.82843 12.6754
0.975 0 0 0.0941246 23 4.79583 10.1027
1.005 0 0 0.0313749 7 2.64575 8.40846
1.035 0 0 0.0313749 5 2.23607 6.55734
1.065 0 0 0 6 2.44949 5.9926
1.095 0 0 0 6 2.44949 4.64348
1.125 0 0 0 4 2 4.8631
1.155 0 0 0 4 2 3.51398
1.185 0 0 0 7 2.64575 3.79636
1.215 0 0 0 6 2.44949 2.76099
1.245 0 0 0 2 1.41421 2.22761
1.275 0 0 0 2 1.41421 2.07074
1.305 0 0 0 3 1.73205 2.19624
1.335 0 0 0 2 1.41421 1.63149
1.365 0 0 0 1 1 1.60012
1.395 0 0 0 1 1 1.44324
1.425 0 0 0 0 0 1.22362
1.455 0 0 0 0 0 1.09812
1.485 0 0 0 1 1 0.784371
1.515 0 0 0 1 1 1.03537
1.545 0 0 0 0 0 0.815746
1.575 0 0 0 0 0 0.533373
1.605 0 0 0 2 1.41421 0.690247
1.635 0 0 0 0 0 0.784371

Fig. 5
Inv Mass (GeV/c^2)
 Data
 Error
 Background
 Background Error
0.54 0 0 0 0
0.62 0 0 0 0
0.7 0 0 0 0
0.78 1 1 0 0
0.86 0 0 0 0
0.94 5 2.23607 0 0
1.02 10 3.16228 1 1
1.1 10 3.16228 2 1.41421
1.18 11 3.31662 3 1.73205
1.26 45 6.7082 3 1.73205
1.34 57 7.54983 5 2.23607
1.42 57 7.54983 6 2.44949
1.5 71 8.42615 4 2
1.58 55 7.4162 4 2
1.66 77 8.77496 4 2
1.74 46 6.78233 1 1
1.82 25 5 2 1.41421
1.9 19 4.3589 1 1
1.98 10 3.16228 2 1.41421
2.06 9 3 1 1
2.14 7 2.64575 4 2
2.22 5 2.23607 0 0
2.3 5 2.23607 2 1.41421
2.38 4 2 1 1
2.46 5 2.23607 0 0
2.54 0 0 0 0
2.62 3 1.73205 0 0
2.7 4 2 0 0
2.78 3 1.73205 0 0
2.86 0 0 0 0
2.94 1 1 0 0
3.02 0 0 0 0
3.1 0 0 1 1
3.18 1 1 0 0
3.26 0 0 0 0
polynomial acc(m) = sum_i c_i * m^i that describes pi^+pi^-pi^+pi^- acceptance in the mass range [1.0, 2.6] GeV/c^2
    c_0 = 1.37255
    c_1 = -4.44161
    c_2 = 5.34368
    c_3 = -2.97937
    c_4 = 0.789811
    c_5 = -0.0805807

 Fig. 6
InvMass (GeV/c^2)
 Unlike-Sign Data
 Unlike-Sign Error
 Like-Sign Data
 Like-Sign Error
0.3525 0 0 0 0
0.3675 3 1.73205 0 0
0.3825 16 4 2 1.41421
0.3975 33 5.74456 3 1.73205
0.4125 58 7.61577 12 3.4641
0.4275 93 9.64365 14 3.74166
0.4425 157 12.53 15 3.87298
0.4575 194 13.9284 10 3.16228
0.4725 282 16.7929 17 4.12311
0.4875 392 19.799 17 4.12311
0.5025 388 19.6977 33 5.74456
0.5175 370 19.2354 18 4.24264
0.5325 387 19.6723 16 4
0.5475 458 21.4009 25 5
0.5625 473 21.7486 24 4.89898
0.5775 453 21.2838 24 4.89898
0.5925 552 23.4947 24 4.89898
0.6075 588 24.2487 14 3.74166
0.6225 618 24.8596 29 5.38516
0.6375 612 24.7386 18 4.24264
0.6525 769 27.7308 18 4.24264
0.6675 896 29.9333 18 4.24264
0.6825 1044 32.311 17 4.12311
0.6975 1122 33.4963 17 4.12311
0.7125 1308 36.1663 16 4
0.7275 1454 38.1314 12 3.4641
0.7425 1526 39.064 17 4.12311
0.7575 1459 38.1969 14 3.74166
0.7725 1259 35.4824 13 3.60555
0.7875 949 30.8058 13 3.60555
0.8025 803 28.3373 10 3.16228
0.8175 622 24.9399 18 4.24264
0.8325 498 22.3159 9 3
0.8475 396 19.8997 10 3.16228
0.8625 276 16.6132 7 2.64575
0.8775 268 16.3707 6 2.44949
0.8925 178 13.3417 8 2.82843
0.9075 162 12.7279 7 2.64575
0.9225 128 11.3137 9 3
0.9375 94 9.69536 11 3.31662
0.9525 96 9.79796 6 2.44949
0.9675 74 8.60233 6 2.44949
0.9825 56 7.48331 6 2.44949
0.9975 66 8.12404 11 3.31662
1.0125 51 7.14143 8 2.82843
1.0275 33 5.74456 4 2
1.0425 27 5.19615 6 2.44949
1.0575 36 6 7 2.64575
1.0725 28 5.2915 3 1.73205
1.0875 26 5.09902 5 2.23607
1.1025 24 4.89898 3 1.73205
1.1175 19 4.3589 5 2.23607
1.1325 17 4.12311 2 1.41421
1.1475 15 3.87298 7 2.64575
1.1625 10 3.16228 2 1.41421
1.1775 20 4.47214 2 1.41421
1.1925 12 3.4641 3 1.73205
polynomial acc(m) = sum_i c_i * m^i that describes pi^+pi^- acceptance in the mass range [0.5, 1.1] GeV/c^2
    c_0 = -9.85142
    c_1 = 60.0474
    c_2 = -138.908
    c_3 = 156.835
    c_4 = -86.5682
    c_5 = 18.7214

Fig. 7
InvMass (GeV/c^2)
 Data
 Error
1.1 82 9.05539
1.18 50 7.07107
1.26 28 5.2915
1.34 15 3.87298
1.42 6 2.44949
1.5 5 2.23607
1.58 9 3
1.66 4 2
1.74 3 1.73205
1.82 1 1
1.9 2 1.41421
1.98 2 1.41421
2.06 1 1
2.14 0 0
2.22 2 1.41421
2.3 0 0
2.38 0 0
2.46 0 0
2.54 0 0
2.62 1 1
2.7 1 1
2.78 0 0
2.86 0 0
2.94 0 0
3.02 0 0
polynomial acc(m) = sum_i c_i * m^i that describes pi^+pi^- acceptance in the mass range [1.1, 3.0] GeV/c^2
    c_0 = 0.593427
    c_1 = -1.33192
    c_2 = 1.69886
    c_3 = -1.02151
    c_4 = 0.292676
    c_5 = -0.0322233

 For any questions please contact STAR Physics Analysis Coordinator : Xin Dong - XDong@lbl.gov