Generator / tune

Pythia 8 (AU2LOXX) 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 +1.5 120 +3.5 120
23 +1.0 24 0 24
3.5 -0.48 3.7 -0.16 3.8
pp/ppbar → bb 28 -0.0096 4.2 +2.7 36
6.7 -4.3 2.4 +7.2 9.6
0.61 -0.98 0.60 +0.0011 0.60
pp/ppbar → Elastic 19 0 18 +2.5 21
16 0 16 +1.0 17
14 -0.70 14 +0.0090 14
pp/ppbar → Jets 320 +74 320 +220 380
91 +3.0 94 +76 170
0.0014 -71 0.0010 -2.7 0.0020
pp/ppbar → Soft QCD (inelastic) 86 +9.5 75 +140 210
4.2 +2.9 7.1 -1.0 6.1
0.0035 -7.0 0.0035 -3.7 0.0035
pp/ppbar → Soft QCD (nsd only) 13 +2.0 13 +1.3 14
2.7 0 2.7 +0.100 2.8
0.048 -0.79 0.055 -1.1 0.043
pp/ppbar → Total σ 2.0 0 2.0 +0.0053 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.0053 2.0
pp/ppbar → Top (t-channel) 2.2 +0.57 2.7 +0.49 2.7
0.53 +0.080 0.61 +0.070 0.68
0.041 -0.090 0.040 -0.15 0.034
pp/ppbar → Top (all) 2.5
? ? 1.1
0.46
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 8.1 +3.1 8.5 +8.4 11
1.3 -0.10 1.2 +0.10 1.3
0.0013 -4.8 0.0066 -2.9 0.0078
pp/ppbar → Underlying Event 23 +1.3 22 +13 27
1.7 +0.20 1.9 +0.10 2.0
0.099 -1.5 0.073 -1.4 0.055
pp/ppbar → W+Jet 8.2 +0.30 6.3 +4.9 8.5
2.8 -0.80 2.0 +2.1 4.1
1.3 -0.017 0.55 -0.48 1.4
pp/ppbar → W 33 +6.0 37 +8.3 35
6.7 +0.90 7.6 +1.0 8.6
0.23 -3.6 0.28 -2.0 0.21
pp/ppbar → WW 53 +1.1 52 +3.9 53
20 -1.0 19 +1.0 20
0.086 -6.0 0.089 -0.28 0.100
pp/ppbar → Z+Jet 330 +9.8 330 +230 390
100 -1.0 99 +71 170
0.40 -65 0.33 -1.6 0.18
pp/ppbar → Z (Drell-Yan) 26 +19 20 +38 52
2.6 +1.1 3.7 -0.10 3.6
0.18 -12 0.32 -20 0.13

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 11232 histograms.