Generator / tune

Pythia 8 (AU2M) versions validation

Versions:

2>
incl. 5% "theory uncertainty" on all points
max worst max worst max
8.306 <Δ> 8.307 <Δ> 8.308
min best min best min
pp/ppbar → 4-lepton 120 +0.52 120 +0.60 120
21 +1.0 22 0 22
2.3 -0.91 2.7 -0.17 2.7
pp/ppbar → bb 27 +3.6 27 +3.8 100
6.7 +0.70 7.4 +6.6 14
0.40 -0.11 0.39 -0.17 0.39
pp/ppbar → Elastic 17 0 16 +4.3 21
15 0 15 +2.0 17
14 -0.91 14 +0.020 14
pp/ppbar → Jets 300 +72 320 +230 380
84 +1.0 85 +85 170
0.00073 -67 0.00063 -3.8 0.0011
pp/ppbar → Soft QCD (inelastic) 130 +17 96 +140 240
4.8 +2.9 7.7 -1.3 6.4
0.0023 -37 0.0035 -3.0 0.0035
pp/ppbar → Soft QCD (nsd only) 15 +4.5 15 +1.5 15
2.7 +0.20 2.9 +0.10 3.0
0.16 -1.0 0.17 -0.37 0.16
pp/ppbar → Total σ 2.0 0 2.0 +0.0052 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.0052 2.0
pp/ppbar → Top (t-channel) 2.6 +0.32 2.5 +0.52 2.7
0.70 +0.040 0.74 +0.080 0.82
0.049 -0.22 0.031 -0.11 0.060
pp/ppbar → Top (all) 1.2
? ? 0.73
0.25
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 64 +5.7 55 +57 110
4.7 -0.20 4.5 +2.2 6.7
0.0015 -15 0.0058 -5.7 0.0020
pp/ppbar → Underlying Event 19 +5.0 18 +3.6 20
1.4 +0.10 1.5 +0.20 1.7
0.13 -0.80 0.099 -5.6 0.10
pp/ppbar → W+Jet 8.1 -0.099 7.3 +3.2 8.7
3.2 -1.0 2.2 +0.80 3.0
0.79 -0.74 0.51 -0.27 0.36
pp/ppbar → W 5.2 -0.17 32 +2.2 24
3.7 +2.0 5.7 -0.30 5.4
1.7 -0.77 0.97 -8.1 1.1
pp/ppbar → WW 51 +3.6 52 +3.1 53
18 +2.0 20 0 20
0.12 -0.53 0.098 -0.71 0.10
pp/ppbar → Z+Jet 330 +66 310 +220 390
96 -1.0 95 +75 170
0.19 -68 0.18 -0.90 0.19
pp/ppbar → Z (Drell-Yan) 25 +15 27 +38 56
5.9 +1.9 7.8 -1.4 6.4
0.24 -4.1 0.25 -1.3 0.071

Legend: [ χ2 < 1 ] / [ 1 ≤ χ2 < 4 ] / [ 4 ≤ χ2 ]

(click on number in the table cell to see individual observables)

The page data is based on 11306 histograms.