Generator / tune

Pythia 8 (Early Tune) 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 +0.64 120 +0.72 120
23 0 23 0 23
3.1 -0.35 3.5 -0.28 3.6
pp/ppbar → bb 19 +3.9 28 +8.5 120
6.3 +1.4 7.7 +8.3 16
0.81 -0.15 0.80 -0.066 0.81
pp/ppbar → Elastic 17 +1.7 18 +2.7 21
15 +1.0 16 +1.0 17
14 +0.011 14 +0.0090 14
pp/ppbar → Jets 290 +72 290 +220 380
81 -3.0 78 +82 160
0.00064 -71 0.0047 -10 0.0052
pp/ppbar → Soft QCD (inelastic) 110 +12 120 +190 310
6.9 -0.10 6.8 +2.2 9.0
0.0030 -5.6 0.0035 -4.3 0.0035
pp/ppbar → Soft QCD (nsd only) 35 +2.6 37 +11 39
5.6 0 5.6 +0.50 6.1
0.21 -1.5 0.23 -0.98 0.19
pp/ppbar → Total σ 2.0 -0.0029 2.0 +0.0053 2.0
2.0 0 2.0 0 2.0
2.0 -0.0029 2.0 +0.0053 2.0
pp/ppbar → Top (t-channel) 2.6 +0.39 2.6 +0.61 2.6
1.0 -0.14 0.86 +0.100 0.96
0.13 -0.71 0.065 -0.053 0.079
pp/ppbar → Top (all) 2.0
? ? 1.1
0.50
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 100 +7.0 92 +98 170
8.0 -1.8 6.2 +4.8 11
0.0034 -30 0.0079 -3.7 0.0054
pp/ppbar → Underlying Event 34 +4.9 30 +47 70
6.0 -0.40 5.6 +1.8 7.4
0.20 -10 0.21 -10 0.12
pp/ppbar → W+Jet 1.7 +1.2 10 +5.3 15
1.1 +1.2 2.3 +0.70 3.0
0.57 -0.16 0.53 -0.68 0.16
pp/ppbar → W 26 +4.6 18 +5.5 24
5.7 -1.6 4.1 +1.6 5.7
1.8 -3.2 1.1 -2.0 1.7
pp/ppbar → WW 53 +1.1 53 +3.2 53
20 0 20 0 20
0.086 -3.9 0.12 -0.23 0.10
pp/ppbar → Z+Jet 310 +67 310 +220 390
81 +19 100 +70 170
0.26 -8.6 0.38 -4.2 0.25
pp/ppbar → Z (Drell-Yan) 75 +11 78 +61 110
15 0 15 +5.0 20
0.38 -3.8 0.37 -12 0.22

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 11480 histograms.