Generator / tune

Pythia 8 (CR:mode=1) versions validation

Versions:

2>
incl. 5% "theory uncertainty" on all points
max worst max worst max
8.243 <Δ> 8.244 <Δ> 8.301
min best min best min
pp/ppbar → bb 170 +8.1 180 +0.98 180
29 +1.0 30 -1.0 29
2.4 -0.73 2.4 -3.4 2.4
pp/ppbar → Elastic 21 +0.00020 21 +0.054 21
17 0 17 0 17
14 -0.046 14 -0.00020 14
pp/ppbar → Jets 530 +13 530 +0.87 520
6.8 +0.10 6.9 0 6.9
0.00018 -3.6 0.000080 -7.4 0.000072
pp/ppbar → Soft QCD (inelastic) 240 +17 240 +2.3 230
6.6 +0.20 6.8 -0.100 6.7
0.0035 -2.3 0.0035 -14 0.0035
pp/ppbar → Soft QCD (nsd only) 18 +0.35 18 +1.5 18
3.1 +0.10 3.2 -0.10 3.1
0.19 -0.41 0.19 -0.56 0.17
pp/ppbar → Total σ 2.0 +0.000040 2.0 -0.000040 2.0
2.0 0 2.0 0 2.0
2.0 +0.000040 2.0 -0.000040 2.0
pp/ppbar → tt 1.4 +0.081 1.3 +0.023 1.3
0.32 0 0.32 +0.010 0.33
0.0087 -0.099 0.0090 -0.028 0.0080
pp/ppbar → Underlying Event 690 +3.6 690 +3.0 690
29 -3.0 26 +2.0 28
0.056 -0.50 0.064 -3.7 0.073
pp/ppbar → W+Jet 6.4 +0.53 7.3 +0.21 6.2
3.1 +0.60 3.7 -0.40 3.3
0.95 -0.29 0.95 -0.65 0.96
pp/ppbar → W 25 +3.9 16 +3.9 20
5.3 0 5.3 -0.80 4.5
1.3 -9.2 1.5 -4.7 1.6
pp/ppbar → Z+Jet 19 +3.3 21 +0.30 19
4.7 +0.30 5.0 -0.30 4.7
1.3 -0.088 1.3 -3.7 1.2
pp/ppbar → Z (Drell-Yan) 11 +0.67 11 +0.57 11
2.3 0 2.3 0 2.3
0.62 -0.62 0.55 -0.62 0.68

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 2838 histograms.