Production of e+e- pairs accompanied by nuclear dissociation in ultraperipheral heavy-ion collisions
J. Adams et al., Phys. Rev. C 70, 031902(R) (2004).

Figure 2a: Pair mass distributions

Errors listed include both statistical and systematic errors.

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Mass [GeV] dσ/dM [mb/GeV]
0.140-0.1650.015 +/- 0.07
0.165-0.1900.025 +/- 0.08
0.190-0.2150.014 +/- 0.05
0.215-0.2400.008 +/- 0.04
0.240-0.2650.006 +/- 0.05

Figure 2b: Pair pT

Errors listed include both statistical and systematic errors.

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pT [MeV/c] dσ/dpT [mb/(GeV/c)]
0-150.017 +/- 0.009
15-300.042 +/- 0.011
30-450.017 +/- 0.007
45-600.011 +/- 0.006
60-750.002 +/- 0.002
75-900.002 +/- 0.002
90-1050.002 +/- 0.002

Figure 2c: Pair rapidity

Errors listed include both statistical and systematic errors.

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Rapidity dσ/dy [mb]
-1.15 - -0.69 0.5 +/- 0.3
-0.69 - -0.23 1.1 +/- 0.4
-0.23 - 0.23 1.1 +/- 0.4
0.23 - 0.69 0.6 +/- 0.3
0.69 - 1.15 0.3 +/- 0.3

Figure 2d: Pair cos(θ')

Errors listed include both statistical and systematic errors.

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Cos(θ') d&sigma/dcos(θ) [mb]
0.000 - 0.117 4.0 +/- 1.6
0.117 - 0.233 1.5 +/- 1.0
0.233 - 0.350 3.3 +/- 1.4
0.350 - 0.467 2.0 +/- 1.1
0.467 - 0.583 1.8 +/- 1.0
0.583 - 0.700 0.5 +/- 0.6

Figure 3: pT distributions of electrons and positrons.

Entries are raw data. Errors plotted are sqrt(entries).

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Entries
pT [MeV/c] Electrons Positrons
65.00 - 81.67 21 18
81.67 - 98.33 16 16
98.33 - 115.00 11 11
115.00 - 131.67 4 6
131.67 - 148.33 0 1

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