Generator

Details for Pythia 8.243 default vs. default-CD

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (default-CD)
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 n/a - n/a
B jet
η
CMS_2018_I1703993 13000 22 -5.0 17
B jet
pT
CMS_2018_I1703993 13000 26 -7.0 19
bjbj.m
CMS_2018_I1703993 13000 32 -3.0 29
bjbj.pt
CMS_2018_I1703993 13000 27 -6.0 21
bjt.dphi
ATLAS_2022_I2037744 13000 0.87 -0.28 0.59
ej.pt
ATLAS_2022_I2037744 13000 2.5* -0.50 2.0*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 3.1 +0.60 3.7
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 2.9 +0.30 3.2
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.1 +0.30 3.4
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.7 +0.60 3.3
ejej.dphi
ATLAS_2022_I2037744 13000 1.1 0 1.1
ejets.ht
CMS_2021_I1901295 13000 13 -2.0 11
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.1 +0.20 2.3
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.5 +0.30 2.8
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.16 +0.010 0.17
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.026 +0.041 0.067
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.5 -1.3 0.19
Jet pT
ATLAS_2014_I1304688 7000 6.7 +0.40 7.1
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 1.9 +0.10 2.0
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.26 +0.070 0.33
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.1 +0.20 2.3
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.3 +0.100 1.4
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.8 +0.40 2.2
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 3.1 -0.30 2.8
Lepton η
ATLAS_2019_I1759875 13000 13 -1.0 12
CMS_2018_I1703993 13000 15 -4.0 11
Lepton pT
ATLAS_2019_I1759875 13000 17 0 17
CMS_2018_I1703993 13000 26 -4.0 22
CMS_2021_I1901295 13000 5.9 +0.90 6.8
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.3 0 4.3
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.64 0 0.64
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 5.8 -0.50 5.3
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 15 0 15
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 20 -5.0 15
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 10 +1.0 11
CMS_2018_I1703993 13000 24 -4.0 20
Dilepton
HT
ATLAS_2019_I1759875 13000 15 -1.0 14
Dilepton
m
ATLAS_2019_I1759875 13000 13 +1.0 14
CMS_2018_I1703993 13000 26 -6.0 20
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 16 -2.0 14
CMS_2018_I1703993 13000 22 -5.0 17
Dilepton
y
ATLAS_2019_I1759875 13000 12* -1.0 11*
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 0.88 +0.52 1.4
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 13 +1.0 14
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.5 +1.4 5.9
CMS_2018_I1703993 13000 22 -7.0 15
sumpt
ATLAS_2022_I2152933 13000 2.8 +1.4 4.2
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.3 0 4.3
ATLAS_2020_I1801434 13000 3.1 +0.60 3.7
ATLAS_2022_I2077575 13000 3.6* -1.4 2.2
Top pT
ATLAS_2019_I1750330 13000 3.2 +1.0 4.2*
ATLAS_2020_I1801434 13000 3.1 +0.50 3.6
ATLAS_2022_I2037744 13000 0.96 +0.64 1.6
ATLAS_2022_I2077575 13000 2.1* -0.10 2.0*
CMS_2018_I1703993 13000 31 -4.0 27
CMS_2021_I1901295 13000 12 0 12*
top.pt.ttbarRF
CMS_2018_I1703993 13000 31 -4.0 27
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 3.5 +0.70 4.2
Top rapidity
ATLAS_2019_I1750330 13000 3.8 +0.70 4.5
ATLAS_2020_I1801434 13000 3.4 +0.50 3.9
ATLAS_2022_I2037744 13000 0.68 +0.30 0.98*
ATLAS_2022_I2077575 13000 2.3* 0 2.3*
CMS_2018_I1703993 13000 26 -4.0 22
CMS_2021_I1901295 13000 11 0 11
topej.dphi
ATLAS_2022_I2037744 13000 2.4* +0.20 2.6
topej.m
ATLAS_2022_I2037744 13000 0.82 +0.18 1.0
χ(ttbar)
ATLAS_2019_I1750330 13000 4.5 +0.20 4.7
ATLAS_2020_I1801434 13000 3.6 -0.30 3.3
ATLAS_2022_I2077575 13000 1.9 +3.0 4.9*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.5 -0.60 4.9
ATLAS_2020_I1801434 13000 3.6 +0.70 4.3
ATLAS_2022_I2037744 13000 n/a - 0.74
ATLAS_2022_I2077575 13000 2.2 +0.20 2.4
CMS_2018_I1703993 13000 40 0 40
CMS_2021_I1901295 13000 19 0 19
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 26 -3.0 23
CMS_2021_I1901295 13000 10 +1.0 11
ttbar HT
ATLAS_2019_I1750330 13000 3.3 +0.50 3.8
ATLAS_2020_I1801434 13000 3.0 -0.40 2.6
ATLAS_2022_I2037744 13000 0.68 +2.4 3.1
ATLAS_2022_I2077575 13000 2.4 +0.20 2.6
CMS_2021_I1901295 13000 9.6 +1.4 11
m(ttbar)
ATLAS_2019_I1750330 13000 3.0* +0.60 3.6*
ATLAS_2020_I1801434 13000 3.1 +0.10 3.2
ATLAS_2022_I2037744 13000 1.4 +1.5 2.9
ATLAS_2022_I2077575 13000 1.9* +0.20 2.1*
CMS_2018_I1703993 13000 26 -2.0 24
CMS_2021_I1901295 13000 16 0 16
Pcrossttbar
ATLAS_2020_I1801434 13000 3.0 +1.7 4.7
ttbar pT
ATLAS_2019_I1750330 13000 4.8* -0.20 4.6
ATLAS_2020_I1801434 13000 2.9 +0.70 3.6
ATLAS_2022_I2037744 13000 0.33 +0.35 0.68
ATLAS_2022_I2077575 13000 2.3* -0.20 2.1*
CMS_2018_I1703993 13000 25 0 25
CMS_2021_I1901295 13000 12 +1.0 13
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.1 0 3.1
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.6 0 2.6
CMS_2021_I1901295 13000 16 0 16
Ttbar rapidity
ATLAS_2019_I1750330 13000 3.8 +0.50 4.3
ATLAS_2020_I1801434 13000 2.7 +0.100 2.8
ATLAS_2022_I2037744 13000 0.96 +0.64 1.6
ATLAS_2022_I2077575 13000 3.2 0 3.2
CMS_2018_I1703993 13000 26 -3.0 23
CMS_2021_I1901295 13000 14 +1.0 15
Mean rapidity
ATLAS_2019_I1750330 13000 5.8 -0.100 5.7
ATLAS_2020_I1801434 13000 3.5 -0.20 3.3
ATLAS_2022_I2077575 13000 2.9 -0.10 2.8
ttbarej.ht
ATLAS_2022_I2037744 13000 0.59 +0.81 1.4
ttbarej.m
CMS_2021_I1901295 13000 12 +1.0 13
pT ratio
W to b
ATLAS_2020_I1801434 13000 3.3 0 3.3
pT ratio
W to top
ATLAS_2020_I1801434 13000 3.2 +0.70 3.9
Cross sections
ATLAS_2022_I2037744 13000 0.076 +1.1 1.2
ATLAS_2022_I2077575 13000 13 +2.0 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.