Generator / tune

Details for Pythia 6.426 z2-lep vs. 6.427

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Asymmetry
 AC vs Mttbar
 CMS_2016_I1430892 8000 n/a - n/a
Asymmetry
 AC vs pTttbar
 CMS_2016_I1430892 8000 n/a - n/a
Asymmetry
 AC vs yttbar
 CMS_2016_I1430892 8000 n/a - n/a
Asymmetry
 ACl vs Mttbar
 CMS_2016_I1430892 8000 n/a - n/a
Asymmetry
 ACl vs pTttbar
 CMS_2016_I1430892 8000 n/a - n/a
Asymmetry
 ACl vs yttbar
 CMS_2016_I1430892 8000 n/a - n/a
Asymmetry
 Energy asymmetry
 ATLAS_2021_I1941095 13000 0.45 +0.65 1.1
B jet
 η
 CMS_2018_I1703993 13000 48 +4.0 52
B jet
 pT
 CMS_2018_I1703993 13000 54 +7.0 61
bjbj.m
 CMS_2018_I1703993 13000 63 +9.0 72
bjbj.pt
 CMS_2018_I1703993 13000 60 +8.0 68
bjt.dphi
 ATLAS_2022_I2037744 13000 2.0 -0.80 1.2
ej.pt
 ATLAS_2022_I2037744 13000 3.2 0 3.2
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 4.5 -1.8 2.7
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 3.7 -0.80 2.9
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 3.5 -0.30 3.2
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 2.6 +0.30 2.9
ejej.dphi
 ATLAS_2022_I2037744 13000 0.58 +0.82 1.4
ejets.ht
 CMS_2021_I1901295 13000 11 0 11
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 5.6 -1.6 4.0
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 3.1 0 3.1
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.88 +0.020 0.90
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.53 +0.040 0.57
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.47 +1.1 1.6
Jet pT
 ATLAS_2014_I1304688 7000 17 -1.0 16
ATLAS_2019_I1718132 13000 9.9* - n/a
Dijet
 Δη
 ATLAS_2019_I1718132 13000 13 - n/a
Dijet
 Δφ
 ATLAS_2019_I1718132 13000 13 - n/a
Dijet
 HT
 ATLAS_2019_I1718132 13000 10 - n/a
Jet mass
 Dijet mass
 ATLAS_2019_I1718132 13000 13 - n/a
Jet Shapes
 Differential Jet Shape
 ATLAS_2013_I1243871 7000 3.7 -1.3 2.4
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.84 -0.44 0.40
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 2.1 -0.40 1.7
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.3 -0.20 1.1
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 2.1 -0.20 1.9
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 2.6 -0.20 2.4
Lepton η
 ATLAS_2019_I1759875 13000 33 -1.0 32
CMS_2018_I1703993 13000 30 +1.0 31
Lepton pT
 ATLAS_2019_I1759875 13000 45 -2.0 43
CMS_2018_I1703993 13000 53 +5.0 58
CMS_2021_I1901295 13000 12 0 12
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 4.4 -1.0 3.4
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.79 -0.18 0.61
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 6.0 -1.7 4.3
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 13 - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 37 -1.0 36
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 38 +3.0 41
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 9.8 - n/a
ATLAS_2019_I1759875 13000 22 -2.0 20
CMS_2018_I1703993 13000 48 +2.0 50
Dilepton
 HT
 ATLAS_2019_I1759875 13000 37 -1.0 36
Dilepton
 m
 ATLAS_2019_I1759875 13000 34 -3.0 31
CMS_2018_I1703993 13000 49 +3.0 52
Dilepton
 pT
 ATLAS_2019_I1718132 13000 9.8 - n/a
ATLAS_2019_I1759875 13000 37 -1.0 36
CMS_2018_I1703993 13000 47 +2.0 49
Dilepton
 y
 ATLAS_2019_I1759875 13000 28 +1.0 29*
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 1.2 -0.20 1.0
Jet Multiplicities
 Extra jets multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
ATLAS_2022_I2037744 13000 n/a - n/a
CMS_2021_I1901295 13000 19 +1.0 20
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 6.0 -0.70 5.3
CMS_2018_I1703993 13000 49 -1.0 48
sumpt
 ATLAS_2022_I2152933 13000 4.5 -1.5 3.0
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 7.9 +0.20 8.1
ATLAS_2020_I1801434 13000 4.2 -0.10 4.1
ATLAS_2022_I2077575 13000 2.5* -0.70 1.8
Top pT
 ATLAS_2019_I1750330 13000 5.8 -0.100 5.7
ATLAS_2020_I1801434 13000 4.7 -0.80 3.9
ATLAS_2022_I2037744 13000 1.6 -0.50 1.1
ATLAS_2022_I2077575 13000 1.6* +0.100 1.7*
CMS_2018_I1703993 13000 76 -1.0 75
CMS_2021_I1901295 13000 21* 0 21
top.pt.ttbarRF
 CMS_2018_I1703993 13000 71 -1.0 70
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 5.6 -1.2 4.4
Top rapidity
 ATLAS_2019_I1750330 13000 7.1 +0.30 7.4
ATLAS_2020_I1801434 13000 5.3 -0.60 4.7
ATLAS_2022_I2037744 13000 1.4 -0.49 0.91
ATLAS_2022_I2077575 13000 1.7* 0 1.7*
CMS_2018_I1703993 13000 67 +1.0 68
CMS_2021_I1901295 13000 23 +1.0 24*
topej.dphi
 ATLAS_2022_I2037744 13000 2.5 +0.40 2.9
topej.m
 ATLAS_2022_I2037744 13000 1.5 -0.61 0.89
χ(ttbar)
 ATLAS_2019_I1750330 13000 7.7 0 7.7
ATLAS_2020_I1801434 13000 4.6 -0.100 4.5
ATLAS_2022_I2077575 13000 1.6 +0.30 1.9
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 6.5 +0.100 6.6
ATLAS_2020_I1801434 13000 4.7 -0.10 4.6
ATLAS_2022_I2037744 13000 2.1 +0.40 2.5
ATLAS_2022_I2077575 13000 2.0 -0.20 1.8
CMS_2018_I1703993 13000 94 +1.0 95
CMS_2021_I1901295 13000 27 +1.0 28
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 76 -4.0 72
CMS_2021_I1901295 13000 23 -1.0 22
ttbar HT
 ATLAS_2019_I1750330 13000 6.2 0 6.2
ATLAS_2020_I1801434 13000 4.8 -1.0 3.8
ATLAS_2022_I2037744 13000 0.83 -0.020 0.81
ATLAS_2022_I2077575 13000 2.4* +0.30 2.7*
CMS_2021_I1901295 13000 22 +1.0 23
m(ttbar)
 ATLAS_2019_I1750330 13000 4.7 -0.10 4.6*
ATLAS_2020_I1801434 13000 5.1 -0.90 4.2
ATLAS_2022_I2037744 13000 n/a - 2.0
ATLAS_2022_I2077575 13000 1.5* +0.10 1.6*
CMS_2018_I1703993 13000 80 +2.0 82
CMS_2021_I1901295 13000 27* -1.0 26
Pcrossttbar
 ATLAS_2020_I1801434 13000 4.5 -0.100 4.4
ttbar pT
 ATLAS_2019_I1750330 13000 7.3 -0.20 7.1
ATLAS_2020_I1801434 13000 4.7 0 4.7
ATLAS_2022_I2037744 13000 2.7 -0.50 2.2
ATLAS_2022_I2077575 13000 1.6* +0.50 2.1*
CMS_2018_I1703993 13000 67 -1.0 66
CMS_2021_I1901295 13000 16 0 16
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 6.3 -1.2 5.1
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 1.9 +0.10 2.0
CMS_2021_I1901295 13000 30 -1.0 29
Ttbar rapidity
 ATLAS_2019_I1750330 13000 6.7 +0.20 6.9
ATLAS_2020_I1801434 13000 4.1 -0.90 3.2
ATLAS_2022_I2037744 13000 1.7 -0.77 0.93
ATLAS_2022_I2077575 13000 3.3 -1.4 1.9
CMS_2018_I1703993 13000 61 0 61
CMS_2021_I1901295 13000 26 -1.0 25
Mean rapidity
 ATLAS_2019_I1750330 13000 10 0 10
ATLAS_2020_I1801434 13000 3.9 -0.20 3.7
ATLAS_2022_I2077575 13000 2.0 -0.30 1.7
ttbarej.ht
 ATLAS_2022_I2037744 13000 3.2 +2.0 5.2
ttbarej.m
 CMS_2021_I1901295 13000 18 0 18
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 5.0 -0.80 4.2
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 4.7 -0.20 4.5
Cross sections
 ATLAS_2022_I2037744 13000 0.60 -0.24 0.36
ATLAS_2022_I2077575 13000 7.3 +1.4 8.7
CMS_2019_I1753720 13000 n/a - n/a

* several "n/a" histograms were excluded from the calculation



n/a indicates that the χ2 value is unavailable, typically due to mismatched binning between theoretical and MC histograms or other issues.



The page data is based on 2224 histograms.