Generator / tune

Pythia 8 (4C) 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 +0.32 120 +0.94 120
23 0 23 0 23
6.2 -0.48 6.3 -0.53 6.2
pp/ppbar → bb 28 +0.37 19 +8.0 80
6.8 -0.50 6.3 +6.7 13
0.22 -1.3 0.19 -0.077 0.20
pp/ppbar → Elastic 19 +1.2 20 +1.0 21
16 +1.0 17 0 17
14 0 14 +0.0092 14
pp/ppbar → Jets 320 +7.2 300 +230 380
88 -12 76 +94 170
0.00045 -67 0.00025 -1.8 0.00028
pp/ppbar → Soft QCD (inelastic) 140 +9.4 86 +130 220
4.4 +0.100 4.5 +1.1 5.6
0.0035 -53 0.00023 -2.2 0.0027
pp/ppbar → Soft QCD (nsd only) 14 +0.59 13 +2.8 14
2.5 -0.10 2.4 +0.20 2.6
0.030 -0.65 0.039 -0.29 0.038
pp/ppbar → Total σ 2.0 0 2.0 +0.0024 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.0024 2.0
pp/ppbar → Top (t-channel) 2.5 +0.067 2.5 +0.19 2.5
0.89 -0.090 0.80 +0.020 0.82
0.046 -0.51 0.032 -0.094 0.067
pp/ppbar → Top (all) 2.5
? ? 1.00
0.57
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 47 +14 54 +50 100
5.0 -0.100 4.9 +2.3 7.2
0.0070 -6.7 0.0081 -2.4 0.0043
pp/ppbar → Underlying Event 21 +1.4 20 +3.8 23
1.5 +0.30 1.8 +0.50 2.3
0.017 -2.4 0.038 -0.79 0.015
pp/ppbar → W+Jet 5.7 +0.75 5.3 +1.9 9.2
3.1 -0.10 3.0 +0.80 3.8
1.9 -0.44 1.6 -0.035 1.2
pp/ppbar → W 15 +12 27 +3.1 22
5.4 -0.10 5.3 +0.10 5.4
1.1 -2.0 0.54 -5.4 1.3
pp/ppbar → WW 53 +2.6 53 +2.2 53
19 0 19 +1.0 20
0.093 -1.5 0.11 -0.74 0.10
pp/ppbar → Z+Jet 330 +61 330 +230 390
99 -8.0 91 +79 170
0.16 -69 0.33 -1.5 0.30
pp/ppbar → Z (Drell-Yan) 32 +7.0 27 +29 200
11 -6.5 4.5 +4.8 9.3
0.22 -7.5 0.096 -7.0 0.12

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 11175 histograms.