Generator / tune

Pythia 8 (no CR) 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 +0.38 120 +0.77 120
22 +1.0 23 0 23
2.7 -0.17 2.7 -0.32 2.8
pp/ppbar → bb 28 +2.0 82 +44 130
7.9 +3.1 11 +5.0 16
1.6 -0.19 1.6 -0.13 1.7
pp/ppbar → Elastic 19 -0.011 18 +2.7 21
16 0 16 +1.0 17
14 -0.89 14 +0.020 14
pp/ppbar → Jets 320 +71 300 +230 390
83 0 83 +87 170
0.00063 -71 0.00083 -3.4 0.0011
pp/ppbar → Soft QCD (inelastic) 120 +14 110 +130 240
11 0 11 +3.0 14
0.00055 -13 0.0012 -4.2 0.0035
pp/ppbar → Soft QCD (nsd only) 50 +4.1 48 +20 68
11 +1.0 12 +1.0 13
0.14 -1.8 0.17 -1.4 0.12
pp/ppbar → Total σ 2.0 0 2.0 +0.0053 2.0
2.0 0 2.0 0 2.0
2.0 0 2.0 +0.0053 2.0
pp/ppbar → Top (t-channel) 2.6 +0.24 2.7 +0.66 2.6
0.98 0 0.98 +0.020 1.00
0.13 -0.38 0.045 -0.35 0.089
pp/ppbar → Top (all) 1.6
? ? 0.80
0.23
pp/ppbar → Top (parton level)
? ? ?
pp/ppbar → Top (tt) 43 +17 56 +52 110
3.7 +0.40 4.1 +1.9 6.0
0.0031 -6.6 0.0076 -2.3 0.0051
pp/ppbar → Underlying Event 43 +7.3 31 +35 66
7.6 -0.90 6.7 +1.0 7.7
0.52 -13 0.17 -1.6 0.33
pp/ppbar → W+Jet 6.4 +0.88 6.6 +1.3 8.4
2.9 -0.40 2.5 +0.60 3.1
1.0 -0.64 0.75 -0.41 0.27
pp/ppbar → W 22 +1.4 20 +11 31
4.3 -0.40 3.9 +1.1 5.0
0.66 -3.5 0.41 -0.88 1.3
pp/ppbar → WW 53 +0.57 52 +3.7 53
19 0 19 +1.0 20
0.10 -1.9 0.096 -0.30 0.10
pp/ppbar → Z+Jet 330 +69 330 +230 390
98 +2.0 100 +70 170
0.29 -65 0.15 -1.2 0.36
pp/ppbar → Z (Drell-Yan) 37 +20 54 +69 280
13 0 13 +13 26
0.47 -7.7 0.38 -4.6 0.20

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 11402 histograms.