Generator / tune

Pythia 8 (Vincia) 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
ee → ee : γ*/Z (hadronic) 58 +1.1 220 +1.4 220
1.5 +0.70 2.2 0 2.2
0.0000013 -0.86 0.000079 -0.64 0.00033
pp/ppbar → 4-lepton 120 +0.50 120 +0.38 120
23 0 23 0 23
3.0 -0.27 2.9 -0.43 3.0
pp/ppbar → bb 23 +0.27 100 +70 170
7.5 +7.5 15 +4.0 19
1.7 -1.4 1.7 -0.070 1.7
pp/ppbar → Elastic 20 -0.0018 20 +1.2 21
17 0 17 0 17
14 -0.072 14 +0.0065 14
pp/ppbar → Jets 360 +23 350 +190 390
120 0 120 +60 180
0.00046 -39 0.00076 -2.0 0.00011
pp/ppbar → Soft QCD (inelastic) 240 +8.3 250 +110 360
16 0 16 +4.0 20
0.037 -6.1 0.037 -0.44 0.029
pp/ppbar → Soft QCD (nsd only) 77 +1.2 77 +1.4 78
10 0 10 +1.0 11
0.17 -0.62 0.19 -0.54 0.17
pp/ppbar → Total σ 2.0 0 2.0 +0.00099 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.00099 2.0
pp/ppbar → Top (t-channel) 2.6 +0.019 2.4 +0.30 2.4
0.94 -0.080 0.86 +0.090 0.95
0.029 -0.41 0.038 -0.045 0.069
pp/ppbar → Top (all) 1.6 -0.42 1.4
? 1.6 -0.69 0.91
1.6 -0.42 0.35
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 64 +13 68 +49 110
8.2 +0.70 8.9 +2.1 11
0.0059 -4.2 0.0055 -5.2 0.0047
pp/ppbar → Underlying Event 55 +3.6 42 +18 86
6.3 +0.60 6.9 +3.1 10
0.093 -5.7 0.093 -7.8 0.076
pp/ppbar → W+Jet 6.1 +0.67 6.3 +1.5 6.9
3.3 0 3.3 0 3.3
1.5 -0.73 1.8 -0.79 1.2
pp/ppbar → W 17 +5.2 21 +0.45 16
6.8 +1.0 7.8 -1.2 6.6
1.5 -0.18 1.5 -8.3 1.1
pp/ppbar → WW 61 +1.7 61 +0.56 61
22 0 22 0 22
0.073 -0.43 0.075 -1.0 0.075
pp/ppbar → Z+Jet 360 +30 370 +480 750
130 0 130 +60 190
0.17 -47 0.35 -7.4 0.34
pp/ppbar → Z (Drell-Yan) 110 +11 110 +37 500
21 +2.0 23 +5.0 28
0.27 -5.6 0.25 -1.9 0.32

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 11762 histograms.