Generator / tune

Pythia 8 (AZ) 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 +1.1 120
23 0 23 0 23
3.4 -0.97 3.3 -0.19 3.6
pp/ppbar → bb 28 +1.0 28 +4.2 110
7.7 +0.90 8.6 +6.4 15
1.0 -0.66 0.92 -0.019 0.99
pp/ppbar → Elastic 19 -0.011 17 +4.1 21
16 -1.0 15 +2.0 17
14 -2.1 14 +0.020 14
pp/ppbar → Jets 270 +74 300 +220 380
75 +4.0 79 +81 160
0.00092 -76 0.00021 -12 0.000070
pp/ppbar → Soft QCD (inelastic) 87 +54 140 +120 260
5.3 +0.20 5.5 +1.1 6.6
0.0035 -5.7 0.00038 -3.3 0.000033
pp/ppbar → Soft QCD (nsd only) 28 +2.6 22 +1.8 31
4.6 -0.40 4.2 +0.60 4.8
0.058 -2.5 0.060 -0.54 0.041
pp/ppbar → Total σ 2.0 0 2.0 +0.0024 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.0024 2.0
pp/ppbar → Top (t-channel) 2.6 -0.013 2.3 +0.91 2.7
1.0 -0.17 0.83 +0.15 0.98
0.15 -0.47 0.042 -0.070 0.071
pp/ppbar → Top (all) 1.3
? ? 0.87
0.55
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 46 +4.5 37 +51 88
4.1 -0.90 3.2 +2.6 5.8
0.0037 -14 0.0040 -3.8 0.0043
pp/ppbar → Underlying Event 39 +19 53 +21 69
5.0 +0.90 5.9 +3.3 9.2
0.18 -2.9 0.18 -0.57 0.18
pp/ppbar → W+Jet 3.7 +0.49 6.1 +0.97 10
2.8 +0.50 3.3 +0.90 4.2
1.3 -0.67 2.5 -0.73 1.7
pp/ppbar → W 1.9 -0.70 25 +3.2 18
1.4 +3.7 5.1 0 5.1
0.94 -1.1 0.14 -6.8 0.49
pp/ppbar → WW 53 +1.1 54 +6.2 53
19 0 19 +1.0 20
0.11 -1.8 0.11 -0.82 0.11
pp/ppbar → Z+Jet 310 +64 330 +230 390
93 0 93 +77 170
0.22 -66 0.49 -3.0 0.42
pp/ppbar → Z (Drell-Yan) 57 +11 59 +17 63
18 -2.0 16 0 16
0.13 -45 0.47 -1.1 0.16

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 11168 histograms.