Generator / tune

Pythia 8 (Monash 13) 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
ee → ee : γ*/Z (hadronic) 56 +2.1 58 +1.9 220
1.5 0 1.5 +0.70 2.2
0.000080 -0.96 0.0000041 -0.59 0.000016
pp/ppbar → 4-lepton 120 +0.56 120 +1.7 120
22 +1.0 23 0 23
2.7 -1.2 2.9 -0.32 2.9
pp/ppbar → bb 19 +3.5 28 +3.1 110
5.9 +2.4 8.3 +6.7 15
0.54 -0.12 1.7 -0.13 1.8
pp/ppbar → Elastic 19 0 18 +2.4 21
16 0 16 +1.0 17
14 -0.26 14 +0.0090 14
pp/ppbar → Jets 300 +68 320 +220 380
87 +3.0 90 +80 170
0.000027 -74 0.00016 -11 0.000056
pp/ppbar → Soft QCD (inelastic) 110 +3.7 91 +120 210
4.3 -0.20 4.1 +1.1 5.2
0.0015 -21 0.0021 -2.9 0.0035
pp/ppbar → Soft QCD (nsd only) 12 +1.2 14 +2.2 14
2.7 0 2.7 0 2.7
0.054 -0.75 0.048 -1.3 0.049
pp/ppbar → Total σ 2.0 0 2.0 +0.0025 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.0025 2.0
pp/ppbar → Top (t-channel) 3.0 +0.11 2.5 +0.70 2.7
1.1 -0.23 0.87 +0.13 1.0
0.065 -0.56 0.069 -0.056 0.066
pp/ppbar → Top (all) 0.96 -0.39 1.0
? 0.96 -0.29 0.67
0.96 -0.39 0.26
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 56 +5.9 61 +45 110
4.4 +0.100 4.5 +1.7 6.2
0.0040 -6.5 0.0020 -4.1 0.0057
pp/ppbar → Underlying Event 9.4 +2.9 8.8 +12 21
1.3 +0.20 1.5 +0.30 1.8
0.089 -1.3 0.080 -2.7 0.077
pp/ppbar → W+Jet 4.9 -0.21 5.4 +4.8 7.7
3.1 -0.30 2.8 +1.0 3.8
1.9 -0.92 0.48 -0.12 0.94
pp/ppbar → W 31 +2.9 17 +7.3 24
5.2 -0.90 4.3 +0.20 4.5
0.71 -14 0.65 -3.0 0.31
pp/ppbar → WW 52 +1.1 53 +6.2 53
19 0 19 +1.0 20
0.10 -2.6 0.10 -0.61 0.095
pp/ppbar → Z+Jet 330 +69 330 +230 390
99 -5.0 94 +76 170
0.48 -66 0.37 -1.1 0.31
pp/ppbar → Z (Drell-Yan) 34 +4.3 35 +27 210
8.6 +0.30 8.9 +1.1 10
0.11 -2.9 0.20 -2.2 0.14

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 12431 histograms.