Generator

Details for Pythia 8.301 default-CD vs. default-DL

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (default-CD) Δ χ2+5% (default-DL)
Asymmetry
AC vs Mttbar
CMS_2016_I1430892 8000 3.4 -2.9 0.55
Asymmetry
AC vs pTttbar
CMS_2016_I1430892 8000 10 +2.0 12
Asymmetry
AC vs yttbar
CMS_2016_I1430892 8000 7.5 -4.7 2.8
Asymmetry
ACl vs Mttbar
CMS_2016_I1430892 8000 1.4 -1.2 0.24
Asymmetry
ACl vs pTttbar
CMS_2016_I1430892 8000 1.3 -1.3 0.028
Asymmetry
ACl vs yttbar
CMS_2016_I1430892 8000 9.2 -4.0 5.2
Asymmetry
Energy asymmetry
ATLAS_2021_I1941095 13000 n/a - 1.7
B jet
η
CMS_2018_I1703993 13000 22 -7.0 15
B jet
pT
CMS_2018_I1703993 13000 24 -8.0 16
bjbj.m
CMS_2018_I1703993 13000 31 -11 20
bjbj.pt
CMS_2018_I1703993 13000 25 -8.0 17
bjt.dphi
ATLAS_2022_I2037744 13000 1.3 -0.45 0.85
ej.pt
ATLAS_2022_I2037744 13000 2.0 +0.10 2.1
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 1.8 +1.6 3.4
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 1.6 +2.5 4.1
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 1.3 +2.0 3.3
ΔR(extra jets)
ATLAS_2020_I1801434 13000 1.7 +0.80 2.5
ejej.dphi
ATLAS_2022_I2037744 13000 0.89 +0.71 1.6
ejets.ht
CMS_2021_I1901295 13000 12 0 12
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.0 +1.0 3.0
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 1.5 +1.4 2.9
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.11 +0.060 0.17
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.047 +0.038 0.085
Jet mass
Jet mass
CMS_2017_I1518399 8000 1.6 0 1.6
CMS_2019_I1764472 13000 0.46 +1.2 1.7
Jet pT
ATLAS_2014_I1304688 7000 7.2 -0.20 7.0
ATLAS_2019_I1718132 13000 5.8* +0.60 6.4*
Dijet
Δη
ATLAS_2019_I1718132 13000 6.5 +2.6 9.1*
Dijet
Δφ
ATLAS_2019_I1718132 13000 9.4 -0.30 9.1
Dijet
HT
ATLAS_2019_I1718132 13000 5.3 - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 9.0 +2.0 11
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 1.9 +0.50 2.4
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.29 +0.080 0.37
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.2 +0.100 2.3
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.2 +0.30 1.5
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.1 -0.10 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.8 +0.30 3.1
Lepton η
ATLAS_2019_I1759875 13000 15 -3.0 12
CMS_2018_I1703993 13000 13 -3.4 9.6
Lepton pT
ATLAS_2019_I1759875 13000 22 -7.0 15
CMS_2018_I1703993 13000 24 -8.0 16
CMS_2021_I1901295 13000 6.6 -0.40 6.2
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 5.4 -0.30 5.1
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.91 -0.26 0.65
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 7.0 -0.90 6.1
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 9.2 +0.80 10*
Dilepton
E
ATLAS_2019_I1759875 13000 18 -5.0 13
Dilepton
Δη
CMS_2016_I1430892 8000 0.58 -0.090 0.49
CMS_2018_I1703993 13000 18 -6.0 12
Dilepton
Δφ
ATLAS_2019_I1718132 13000 6.9 +0.40 7.3
ATLAS_2019_I1759875 13000 13 -2.0 11*
CMS_2018_I1703993 13000 25 -8.0 17
Dilepton
HT
ATLAS_2019_I1759875 13000 18 -5.0 13
Dilepton
m
ATLAS_2019_I1759875 13000 16 -4.0 12
CMS_2018_I1703993 13000 23 -8.0 15
Dilepton
pT
ATLAS_2019_I1718132 13000 8.2 -2.2 6.0
ATLAS_2019_I1759875 13000 21 -7.0 14
CMS_2018_I1703993 13000 21 -8.0 13
Dilepton
y
ATLAS_2019_I1759875 13000 12 -2.0 10
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 2.0 -0.20 1.8
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 17 -5.0 12
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.9 +2.4 7.3
CMS_2018_I1703993 13000 20 -2.0 18
sumpt
ATLAS_2022_I2152933 13000 3.1 +2.0 5.1
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.4 -0.30 4.1
ATLAS_2020_I1801434 13000 4.0 +1.4 5.4
ATLAS_2022_I2077575 13000 2.2 +1.3 3.5*
Top pT
ATLAS_2019_I1750330 13000 3.7* -0.40 3.3
ATLAS_2020_I1801434 13000 2.3 +1.6 3.9
ATLAS_2022_I2037744 13000 1.4 -0.58 0.82*
ATLAS_2022_I2077575 13000 2.3* -0.30 2.0*
CMS_2018_I1703993 13000 29 -5.0 24
CMS_2021_I1901295 13000 13* -2.0 11*
top.pt.ttbarRF
CMS_2018_I1703993 13000 28 -5.0 23
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 2.8 +2.6 5.4
Top rapidity
ATLAS_2019_I1750330 13000 4.9 -1.0 3.9
ATLAS_2020_I1801434 13000 2.4 +2.1 4.5
ATLAS_2022_I2037744 13000 1.1 -0.81 0.29*
ATLAS_2022_I2077575 13000 2.2* +0.20 2.4*
CMS_2018_I1703993 13000 25 -3.0 22
CMS_2021_I1901295 13000 12 -1.0 11
topej.dphi
ATLAS_2022_I2037744 13000 2.2 +0.40 2.6
topej.m
ATLAS_2022_I2037744 13000 0.48 +0.45 0.93
χ(ttbar)
ATLAS_2019_I1750330 13000 4.6 -0.60 4.0
ATLAS_2020_I1801434 13000 2.4 +1.7 4.1
ATLAS_2022_I2077575 13000 2.5 +1.3 3.8*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 4.9 -0.50 4.4
ATLAS_2020_I1801434 13000 4.7 +2.2 6.9
ATLAS_2022_I2037744 13000 0.79 +0.31 1.1
ATLAS_2022_I2077575 13000 2.8 0 2.8
CMS_2018_I1703993 13000 41 -7.0 34
CMS_2021_I1901295 13000 20 +1.0 21
Δy (ttbar)
CMS_2016_I1430892 8000 0.34 -0.18 0.16
CMS_2018_I1703993 13000 25 -3.0 22
CMS_2021_I1901295 13000 12 -2.4 9.6
ttbar HT
ATLAS_2019_I1750330 13000 3.6 -0.40 3.2
ATLAS_2020_I1801434 13000 1.9 +1.6 3.5
ATLAS_2022_I2037744 13000 1.1 - n/a
ATLAS_2022_I2077575 13000 2.1 +1.9 4.0*
CMS_2021_I1901295 13000 11 0 11
m(ttbar)
ATLAS_2019_I1750330 13000 3.6* -1.0 2.6
ATLAS_2020_I1801434 13000 2.3 +1.5 3.8
ATLAS_2022_I2037744 13000 3.2 -2.4 0.81
ATLAS_2022_I2077575 13000 1.9* -0.100 1.8*
CMS_2018_I1703993 13000 24 -3.0 21
CMS_2021_I1901295 13000 16 -2.0 14
Pcrossttbar
ATLAS_2020_I1801434 13000 2.7 +1.8 4.5
ttbar pT
ATLAS_2019_I1750330 13000 4.4 -0.50 3.9
ATLAS_2020_I1801434 13000 3.2* +1.3 4.5
ATLAS_2022_I2037744 13000 0.46 -0.19 0.27
ATLAS_2022_I2077575 13000 2.1 +0.50 2.6*
CMS_2018_I1703993 13000 27 -1.0 26
CMS_2021_I1901295 13000 12 -1.0 11
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.4 -0.40 3.0
ttbar.thetaStar
ATLAS_2022_I2077575 13000 4.0* -1.5 2.5
CMS_2021_I1901295 13000 16 -1.0 15
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.7 -1.1 3.6
ATLAS_2020_I1801434 13000 2.0 +0.30 2.3*
ATLAS_2022_I2037744 13000 n/a - 1.3
ATLAS_2022_I2077575 13000 2.7 -0.20 2.5
CMS_2018_I1703993 13000 24 -1.0 23
CMS_2021_I1901295 13000 14 -1.0 13
Mean rapidity
ATLAS_2019_I1750330 13000 6.4 -0.60 5.8
ATLAS_2020_I1801434 13000 1.7 +1.9 3.6
ATLAS_2022_I2077575 13000 2.4 +0.60 3.0
ttbarej.ht
ATLAS_2022_I2037744 13000 0.85 +1.1 1.9
ttbarej.m
CMS_2021_I1901295 13000 14 - n/a
pT ratio
W to b
ATLAS_2020_I1801434 13000 2.0 +1.7 3.7
pT ratio
W to top
ATLAS_2020_I1801434 13000 2.3 +1.6 3.9
Cross sections
ATLAS_2022_I2037744 13000 0.017 +0.093 0.11
ATLAS_2022_I2077575 13000 15 0 15
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.