Coherent ρ0 Production in Ultraperipheral Heavy-Ion Collisions
C. Adler et al., Phys. Rev. Lett. 89, 272302 (2002)

Figure 2a: Uncorrected pT spectrum dN/dpT (0n0n-sample/topology trigger data)

pT [GeV/c] ρ candidates [entries/25 MeV/c] Combinatorial Background [entries/25 MeV/c] MC normalized+BG [entries/25 MeV/c]
0.01 30.00+- 5.48 0.00+- -0.00 16.10
0.04 48.00+- 6.93 2.48+- 1.58 38.70
0.06 42.00+- 6.48 4.97+- 2.23 43.17
0.09 16.00+- 4.00 2.48+- 1.58 27.77
0.11 10.00+- 3.16 9.93+- 3.15 21.07
0.14 9.00+- 3.00 3.72+- 1.93 8.19
0.16 10.00+- 3.16 4.97+- 2.23 7.08
0.19 10.00+- 3.16 4.97+- 2.23 6.44
0.21 6.00+- 2.45 12.41+- 3.52 13.15
0.24 7.00+- 2.65 6.21+- 2.49 6.69
0.26 10.00+- 3.16 7.45+- 2.73 7.71
0.29 8.00+- 2.83 3.72+- 1.93 4.10
0.31 9.00+- 3.00 8.69+- 2.95 8.69
0.34 10.00+- 3.16 8.69+- 2.95 8.69
0.36 13.00+- 3.61 11.17+- 3.34 11.17
0.39 12.00+- 3.46 2.48+- 1.58 2.48
0.41 8.00+- 2.83 3.72+- 1.93 3.72
0.44 5.00+- 2.24 4.97+- 2.23 4.97
0.46 2.00+- 1.41 13.66+- 3.70 13.66
0.49 6.00+- 2.45 7.45+- 2.73 7.45
0.51 3.00+- 1.73 0.00+- -0.00 0.00
0.54 5.00+- 2.24 2.48+- 1.58 2.48
0.56 2.00+- 1.41 11.17+- 3.34 11.17
0.59 2.00+- 1.41 3.72+- 1.93 3.72

Figure 2b: Uncorrected pT spectrum dN/dpT (xnxn-sample/minimum bias data)

pT ρ candidates [Entries/25 MeV/c] Combinatorial Background [Entries/25 MeV/c] MC normalized+BG [Entries/25 MeV/c]
0.01 52.00+- 7.21 2.76+- 1.66 54.69
0.03 189.00+- 13.75 9.66+- 3.11 143.37
0.05 220.00+- 14.83 23.45+- 4.84 183.67
0.07 129.00+- 11.36 20.69+- 4.55 161.64
0.09 85.00+- 9.22 27.59+- 5.25 118.94
0.11 71.00+- 8.43 41.39+- 6.43 87.52
0.13 70.00+- 8.37 38.63+- 6.22 59.43
0.15 62.00+- 7.87 57.94+- 7.61 68.74
0.17 74.00+- 8.60 63.46+- 7.97 72.20
0.19 80.00+- 8.94 45.53+- 6.75 51.15
0.21 72.00+- 8.49 49.67+- 7.05 53.22
0.23 60.00+- 7.75 71.74+- 8.47 73.92
0.25 104.00+- 10.20 95.19+- 9.76 96.34
0.27 90.00+- 9.49 75.88+- 8.71 76.79
0.29 84.00+- 9.17 84.15+- 9.17 85.10
0.31 73.00+- 8.54 71.74+- 8.47 71.74
0.33 90.00+- 9.49 71.74+- 8.47 71.74
0.35 85.00+- 9.22 88.29+- 9.40 88.29
0.37 81.00+- 9.00 80.02+- 8.95 80.02
0.39 85.00+- 9.22 95.19+- 9.76 95.19
0.41 86.00+- 9.27 67.60+- 8.22 67.60
0.43 86.00+- 9.27 99.33+- 9.97 99.33
0.45 68.00+- 8.25 80.02+- 8.95 80.02
0.47 89.00+- 9.43 95.19+- 9.76 95.19
0.49 74.00+- 8.60 74.50+- 8.63 74.50
0.51 48.00+- 6.93 73.12+- 8.55 73.12
0.53 68.00+- 8.25 66.22+- 8.14 66.22
0.55 61.00+- 7.81 55.18+- 7.43 55.18
0.57 63.00+- 7.94 82.78+- 9.10 82.78
0.59 74.00+- 8.60 63.46+- 7.97 63.46

Figure 3a: Rapidity distribution of ρ0 candidates (xn, xn) for the minimum bias data.

y ρ candidates [Entries/0.2 units y] MC Reconstructed (normalized) [Entries/0.2 units y] MC Generated(same norm.) [Entries/ 0.2 units y]
-3.1 0.00+- -0.00 0.00 0.00
-2.9 0.00+- -0.00 0.00 10.64
-2.7 0.00+- -0.00 0.00 24.99
-2.5 0.00+- -0.00 0.00 42.04
-2.3 0.00+- -0.00 0.00 67.73
-2.1 0.00+- -0.00 0.00 90.79
-1.9 0.00+- -0.00 0.00 113.52
-1.7 0.00+- -0.00 0.00 137.80
-1.5 2.00+- 1.41 0.95 150.67
-1.3 10.00+- 3.16 6.04 164.89
-1.1 23.00+- 4.80 20.06 182.52
-0.9 46.00+- 6.78 44.43 195.96
-0.7 82.00+- 9.06 68.80 200.81
-0.5 83.00+- 9.11 95.92 215.19
-0.3 109.00+- 10.44 107.14 218.40
-0.1 119.00+- 10.91 113.10 226.21
0.1 119.00+- 10.91 112.90 227.32
0.3 122.00+- 11.05 111.30 221.85
0.5 75.00+- 8.66 96.25 218.77
0.7 63.00+- 7.94 70.03 209.85
0.9 34.00+- 5.83 42.54 196.49
1.1 24.00+- 4.90 19.85 180.34
1.3 4.00+- 2.00 6.99 166.49
1.5 2.00+- 1.41 0.70 155.40
1.7 0.00+- -0.00 0.00 134.93
1.9 0.00+- -0.00 0.00 117.05
2.1 0.00+- -0.00 0.00 92.10
2.3 0.00+- -0.00 0.00 68.92
2.5 0.00+- -0.00 0.00 43.81
2.7 0.00+- -0.00 0.00 23.59
2.9 0.00+- -0.00 0.00 11.22
3.1 0.00+- -0.00 0.00 0.00

Figure 3b: Differential Cross Section dσ(γAu->ρAu)/dt of ρ0 candidates (xn, xn) for the minimum bias data.

t [(GeV/c)2] dσ(γAu->ρAu)/dt [mb/(GeV/c)2]
0.0005 601.14+- 53.63
0.0015 545.78+- 52.81
0.0025 403.15+- 46.61
0.0035 297.28+- 38.73
0.0045 157.58+- 30.48
0.0055 140.37+- 27.81
0.0065 30.64+- 22.37
0.0075 83.86+- 21.67
0.0085 55.55+- 16.79
0.0095 71.02+- 19.76
0.0105 50.99+- 19.90

Figure 4: Differential Cross Section dσ(AuAu->Au*Au*ρ)/dMππ for two-track (xn,xn) events with pair pT < 150 MeV/c in the minimum bias data.

Mππ [GeV/c2] dσ(AuAu->Au*Au*ρ)/dMππ [mb/45 MeV/c^2] Total Background (comb+ee) [mb/45 MeV/c^2]
0.47 1.74+- 0.34 0.92+- 0.23
0.51 2.00+- 0.34 0.91+- 0.22
0.56 1.61+- 0.25 0.78+- 0.18
0.60 2.25+- 0.30 0.53+- 0.15
0.65 1.82+- 0.25 0.35+- 0.12
0.69 3.24+- 0.35 0.59+- 0.17
0.74 4.49+- 0.43 0.32+- 0.12
0.78 3.69+- 0.39 0.30+- 0.13
0.83 1.78+- 0.26 0.22+- 0.10
0.87 0.91+- 0.18 0.41+- 0.14
0.92 0.46+- 0.13 0.17+- 0.09
0.96 0.32+- 0.11 0.16+- 0.08
1.01 0.22+- 0.09 0.25+- 0.11
1.05 0.07+- 0.05 0.05+- 0.05
1.10 0.27+- 0.10 0.17+- 0.09
James Dunlop
Last modified: Mon Oct 28 15:54:16 EDT 2002