Generator / tune

Pythia 8 (MBR) 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 +0.86 120 +0.58 120
22 0 22 +1.0 23
2.5 -0.33 2.8 -0.32 2.8
pp/ppbar → bb 73 +0.40 14 +3.1 130
12 -6.6 5.4 +11 16
1.7 -0.99 1.3 -0.062 1.7
pp/ppbar → Elastic 18 -0.011 17 +3.9 21
16 -1.0 15 +2.0 17
14 -1.4 14 +0.019 14
pp/ppbar → Jets 300 +76 290 +230 390
78 -7.0 71 +89 160
0.00029 -68 0.000087 -3.6 0.00014
pp/ppbar → Soft QCD (inelastic) 110 +3.2 88 +120 210
4.5 -0.20 4.3 +0.90 5.2
0.00037 -25 0.0000021 -2.4 0.000087
pp/ppbar → Soft QCD (nsd only) 12 +0.38 12 +2.3 13
2.7 -0.10 2.6 +0.10 2.7
0.050 -1.6 0.037 -0.44 0.045
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) 2.8 +0.062 2.6 +0.84 2.7
1.1 -0.12 0.98 +0.020 1.0
0.17 -0.67 0.098 -0.27 0.11
pp/ppbar → Top (all) 1.1
? ? 0.65
0.29
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 47 +4.3 39 +74 100
3.9 -0.30 3.6 +2.6 6.2
0.010 -17 0.0063 -2.7 0.0068
pp/ppbar → Underlying Event 18 +2.7 7.3 +1.8 29
1.6 -0.10 1.5 +0.70 2.2
0.074 -0.82 0.069 -2.4 0.078
pp/ppbar → W+Jet 4.7 +1.4 5.1 +1.0 8.6
2.9 +0.60 3.5 +0.60 4.1
1.5 -0.25 2.5 -0.51 1.2
pp/ppbar → W 23 +0.42 16 +9.7 26
5.2 -1.1 4.1 +0.70 4.8
0.72 -7.2 0.94 -0.79 0.35
pp/ppbar → WW 53 +1.1 53 +5.0 53
19 0 19 +1.0 20
0.083 -1.8 0.10 -0.79 0.100
pp/ppbar → Z+Jet 310 +64 330 +260 390
94 0 94 +76 170
0.53 -66 0.47 -0.76 0.39
pp/ppbar → Z (Drell-Yan) 40 +8.3 35 +28 210
11 -3.3 7.7 +2.3 10
0.23 -6.1 0.36 -9.4 0.061

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 11329 histograms.