Generator / tune

Details for Pythia 6.427 z2-lep vs. 6.428

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (6.427) Δ χ2+5% (6.428)
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 1.1 - n/a
B jet
 η
 CMS_2018_I1703993 13000 52 -6.0 46
B jet
 pT
 CMS_2018_I1703993 13000 61 -9.0 52
bjbj.m
 CMS_2018_I1703993 13000 72 -4.0 68
bjbj.pt
 CMS_2018_I1703993 13000 68 -10 58
bjt.dphi
 ATLAS_2022_I2037744 13000 1.2 +0.90 2.1
ej.pt
 ATLAS_2022_I2037744 13000 3.2 +0.100 3.3
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 2.7 +0.60 3.3
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 2.9 +0.20 3.1
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 3.2 -0.10 3.1
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 2.9 -0.60 2.3
ejej.dphi
 ATLAS_2022_I2037744 13000 1.4 -0.80 0.60
ejets.ht
 CMS_2021_I1901295 13000 11 -1.2 9.8
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 4.0 -0.20 3.8
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 3.1 -0.50 2.6
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.90 -0.090 0.81
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.57 -0.050 0.52
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.6 -0.30 1.3
Jet pT
 ATLAS_2014_I1304688 7000 16 +1.0 17
ATLAS_2019_I1718132 13000 n/a - n/a
Dijet
 Δη
 ATLAS_2019_I1718132 13000 n/a - n/a
Dijet
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
Dijet
 HT
 ATLAS_2019_I1718132 13000 n/a - n/a
Jet mass
 Dijet mass
 ATLAS_2019_I1718132 13000 n/a - n/a
Jet Shapes
 Differential Jet Shape
 ATLAS_2013_I1243871 7000 2.4 0 2.4
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.40 +0.030 0.43
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.7 +0.30 2.0
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.1 +0.100 1.2
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 1.9 +0.20 2.1
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 2.4 +0.70 3.1
Lepton η
 ATLAS_2019_I1759875 13000 32 +4.0 36
CMS_2018_I1703993 13000 31 -3.0 28
Lepton pT
 ATLAS_2019_I1759875 13000 43 +5.0 48
CMS_2018_I1703993 13000 58 -5.0 53
CMS_2021_I1901295 13000 12 0 12
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 3.4 +0.10 3.5
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.61 0 0.61
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 4.3 +0.50 4.8
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 36 +4.0 40
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 41 -1.0 40
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 20 +2.0 22
CMS_2018_I1703993 13000 50 -5.0 45
Dilepton
 HT
 ATLAS_2019_I1759875 13000 36 +4.0 40
Dilepton
 m
 ATLAS_2019_I1759875 13000 31 +5.0 36
CMS_2018_I1703993 13000 52 -6.0 46
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 36 +2.0 38
CMS_2018_I1703993 13000 49 -6.0 43
Dilepton
 y
 ATLAS_2019_I1759875 13000 29* +3.0 32*
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 1.0 -0.22 0.78
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 20 -1.0 19
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 5.3 +0.70 6.0
CMS_2018_I1703993 13000 48 0 48
sumpt
 ATLAS_2022_I2152933 13000 3.0 -1.3 1.7
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 8.1 -0.90 7.2
ATLAS_2020_I1801434 13000 4.1 -0.40 3.7
ATLAS_2022_I2077575 13000 1.8 -0.40 1.4
Top pT
 ATLAS_2019_I1750330 13000 5.7 -0.40 5.3
ATLAS_2020_I1801434 13000 3.9 -0.20 3.7
ATLAS_2022_I2037744 13000 1.1 0 1.1
ATLAS_2022_I2077575 13000 1.7* -0.50 1.2*
CMS_2018_I1703993 13000 75 -3.0 72
CMS_2021_I1901295 13000 21 -1.0 20*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 70 -3.0 67
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 4.4 +0.40 4.8
Top rapidity
 ATLAS_2019_I1750330 13000 7.4 -0.20 7.2
ATLAS_2020_I1801434 13000 4.7 0 4.7
ATLAS_2022_I2037744 13000 0.91 -0.40 0.51*
ATLAS_2022_I2077575 13000 1.7* -0.50 1.2*
CMS_2018_I1703993 13000 68 0 68
CMS_2021_I1901295 13000 24* -3.0 21
topej.dphi
 ATLAS_2022_I2037744 13000 2.9 +0.10 3.0
topej.m
 ATLAS_2022_I2037744 13000 0.89 +0.010 0.90
χ(ttbar)
 ATLAS_2019_I1750330 13000 7.7 +0.30 8.0
ATLAS_2020_I1801434 13000 4.5 -0.30 4.2
ATLAS_2022_I2077575 13000 1.9 -0.20 1.7*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 6.6 -0.100 6.5
ATLAS_2020_I1801434 13000 4.6 +0.30 4.9
ATLAS_2022_I2037744 13000 2.5 +0.80 3.3
ATLAS_2022_I2077575 13000 1.8 -0.10 1.7
CMS_2018_I1703993 13000 95 +4.0 99
CMS_2021_I1901295 13000 28 -2.0 26
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 72 +3.0 75
CMS_2021_I1901295 13000 22 0 22
ttbar HT
 ATLAS_2019_I1750330 13000 6.2 -0.40 5.8
ATLAS_2020_I1801434 13000 3.8 +0.10 3.9
ATLAS_2022_I2037744 13000 0.81 +0.090 0.90
ATLAS_2022_I2077575 13000 2.7* -1.2 1.5
CMS_2021_I1901295 13000 23 -2.0 21
m(ttbar)
 ATLAS_2019_I1750330 13000 4.6* -0.30 4.3*
ATLAS_2020_I1801434 13000 4.2 -0.40 3.8
ATLAS_2022_I2037744 13000 2.0 -1.3 0.75
ATLAS_2022_I2077575 13000 1.6* -0.30 1.3*
CMS_2018_I1703993 13000 82 -5.0 77
CMS_2021_I1901295 13000 26 +1.0 27*
Pcrossttbar
 ATLAS_2020_I1801434 13000 4.4 -0.60 3.8
ttbar pT
 ATLAS_2019_I1750330 13000 7.1 -0.50 6.6
ATLAS_2020_I1801434 13000 4.7 -0.70 4.0
ATLAS_2022_I2037744 13000 2.2 +0.20 2.4
ATLAS_2022_I2077575 13000 2.1* -0.80 1.3*
CMS_2018_I1703993 13000 66 +2.0 68
CMS_2021_I1901295 13000 16 -1.0 15
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 5.1 +0.80 5.9
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 2.0 +0.50 2.5
CMS_2021_I1901295 13000 29 -1.0 28
Ttbar rapidity
 ATLAS_2019_I1750330 13000 6.9 -0.60 6.3
ATLAS_2020_I1801434 13000 3.2 +0.70 3.9
ATLAS_2022_I2037744 13000 0.93 -0.34 0.59
ATLAS_2022_I2077575 13000 1.9 -0.40 1.5
CMS_2018_I1703993 13000 61 -1.0 60
CMS_2021_I1901295 13000 25 0 25
Mean rapidity
 ATLAS_2019_I1750330 13000 10 -0.80 9.2
ATLAS_2020_I1801434 13000 3.7 -0.20 3.5
ATLAS_2022_I2077575 13000 1.7 -0.30 1.4
ttbarej.ht
 ATLAS_2022_I2037744 13000 5.2 -3.7 1.5
ttbarej.m
 CMS_2021_I1901295 13000 18 -1.0 17
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 4.2 +0.20 4.4
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 4.5 -0.30 4.2
Cross sections
 ATLAS_2022_I2037744 13000 0.36 +0.070 0.43
ATLAS_2022_I2077575 13000 8.7 -3.9 4.8
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.