Generator / tune

Pythia 8 (2M) 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 +1.6 120 +1.5 120
23 0 23 0 23
4.3 -0.085 4.3 -0.75 4.3
pp/ppbar → bb 23 +0.53 11 +9.4 53
6.1 -2.0 4.1 +6.9 11
0.19 -2.3 0.18 -1.1 0.18
pp/ppbar → Elastic 19 -0.011 17 +3.9 21
16 -1.0 15 +2.0 17
14 -1.9 14 +0.020 14
pp/ppbar → Jets 310 +72 300 +230 380
82 -5.0 77 +83 160
0.00019 -73 0.00042 -11 0.00015
pp/ppbar → Soft QCD (inelastic) 110 +12 120 +88 210
6.8 -0.50 6.3 +1.8 8.1
0.0035 -15 0.039 -1.3 0.0035
pp/ppbar → Soft QCD (nsd only) 26 +2.9 29 +3.8 37
6.5 0 6.5 +1.2 7.7
0.20 -1.4 0.32 -1.1 0.23
pp/ppbar → Total σ 2.0 +0.0029 2.0 +0.0025 2.0
2.0 0 2.0 0 2.0
2.0 +0.0029 2.0 +0.0025 2.0
pp/ppbar → Top (t-channel) 2.1 +0.34 2.4 +0.40 2.7
0.52 +0.050 0.57 +0.070 0.64
0.029 -0.098 0.033 -0.089 0.028
pp/ppbar → Top (all) 1.1
? ? 0.57
0.13
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 10 +4.7 8.8 +14 23
1.8 -0.10 1.7 +0.70 2.4
0.0041 -6.1 0.0084 -2.9 0.0036
pp/ppbar → Underlying Event 35 +9.1 40 +9.0 47
6.4 +0.30 6.7 +0.80 7.5
0.24 -11 0.16 -2.5 0.12
pp/ppbar → W+Jet 4.2 +0.56 4.1 +1.7 9.6
3.1 0 3.1 +1.3 4.4
2.4 -0.41 2.3 -0.28 2.6
pp/ppbar → W 51 +6.2 31 +5.1 36
8.5 -0.70 7.8 +0.50 8.3
0.31 -20 0.25 -7.0 0.30
pp/ppbar → WW 52 +0.81 51 +2.6 53
20 -1.0 19 +1.0 20
0.095 -1.9 0.097 -0.54 0.10
pp/ppbar → Z+Jet 330 +5.3 330 +220 390
110 -10 100 +70 170
0.19 -67 0.37 -1.8 0.24
pp/ppbar → Z (Drell-Yan) 30 +23 41 +20 41
7.8 +0.20 8.0 +3.0 11
0.30 -3.9 0.19 -7.9 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 11401 histograms.