Generator / tune

Pythia 8 (Tune 1) 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 +0.42 120 +0.92 120
23 0 23 0 23
4.5 -0.34 4.6 -0.23 4.8
pp/ppbar → bb 28 +0.44 28 +7.7 110
8.2 -0.40 7.8 +6.2 14
0.84 -8.0 0.81 -0.12 0.83
pp/ppbar → Elastic 17 0 17 +4.3 21
15 0 15 +2.0 17
14 -0.38 14 +0.020 14
pp/ppbar → Jets 320 +71 320 +230 390
88 -9.0 79 +81 160
0.0015 -72 0.00024 -3.7 0.0016
pp/ppbar → Soft QCD (inelastic) 140 +17 130 +120 250
5.1 -0.20 4.9 +1.6 6.5
0.0035 -8.7 0.020 -3.2 0.0000031
pp/ppbar → Soft QCD (nsd only) 17 +0.87 21 +4.1 25
4.0 -0.10 3.9 +0.50 4.4
0.22 -2.3 0.41 -0.41 0.22
pp/ppbar → Total σ 2.0 -0.0029 2.0 +0.0052 2.0
2.0 0 2.0 0 2.0
2.0 -0.0029 2.0 +0.0052 2.0
pp/ppbar → Top (t-channel) 2.5 +0.21 2.6 +0.94 2.6
0.95 +0.010 0.96 +0.040 1.0
0.095 -0.16 0.075 -0.13 0.079
pp/ppbar → Top (all) 1.3
? ? 0.77
0.53
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 100 +7.3 90 +92 160
7.2 -0.80 6.4 +3.6 10
0.0057 -24 0.0040 -7.7 0.0054
pp/ppbar → Underlying Event 16 +1.5 18 +4.4 20
1.4 +1.0 2.4 -0.30 2.1
0.16 -0.93 0.18 -2.4 0.047
pp/ppbar → W+Jet 12 +2.2 12 +2.4 14
2.6 +1.1 3.7 -0.40 3.3
0.52 -0.56 0.65 -0.37 0.30
pp/ppbar → W 23 +2.4 24 +1.8 24
4.8 +0.10 4.9 -0.20 4.7
1.0 -1.9 1.5 -5.9 1.5
pp/ppbar → WW 52 +0.54 53 +4.2 53
20 -1.0 19 +1.0 20
0.10 -3.4 0.099 -0.57 0.10
pp/ppbar → Z+Jet 330 +65 310 +220 390
110 -27 83 +87 170
0.23 -69 0.22 -1.7 0.23
pp/ppbar → Z (Drell-Yan) 30 +20 32 +36 49
7.3 +2.0 9.3 -1.3 8.0
0.18 -8.9 0.46 -21 0.090

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 11056 histograms.