Generator / tune

Pythia 8 (Vincia) versions validation

Versions:

2>
incl. 5% "theory uncertainty" on all points
max worst max worst max
8.308 <Δ> 8.313 <Δ> 8.315
min best min best min
ee → ee : γ*/Z (hadronic) 220
3.5
0.00072
pp/ppbar → 4-lepton 120
23
2.1
pp/ppbar → bb 110,000
28,000
2.3
pp/ppbar → Elastic 38
36
34
pp/ppbar → Jets 370 +10,000 10,000
3.7 +15 19
0.0019 -370 0.00057
pp/ppbar → Soft QCD (inelastic) 1,500
130
0.20
pp/ppbar → Soft QCD (nsd only) 2,900
310
0.42
pp/ppbar → Total σ 2.7
2.7
2.7
pp/ppbar → Top (t-channel) 4.4
1.6
0.099
pp/ppbar → Top (all) 2.2
0.73
0.20
pp/ppbar → Top (parton level)
pp/ppbar → Top (tt) 110 1,100
9.1 29
0.0071 0.0032
pp/ppbar → Underlying Event 450
20
0.069
pp/ppbar → W+Jet 58 +370 430
19 +57 76
2.7 +7.0 8.5
pp/ppbar → W 150 +55 74
11 +5.0 16
0.35 -0.20 1.6
pp/ppbar → WW 36 +2.2 59
20 +1.0 21
0.56 -1.3 0.072
pp/ppbar → Z+Jet 5,000
43
0.10
pp/ppbar → Z (Drell-Yan) 140,000,000
540,000
0.26

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 6951 histograms.