Generator

Details for Pythia 8.306 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 0.38 -0.020 0.36
Asymmetry
AC vs pTttbar
CMS_2016_I1430892 8000 11 -8.5 2.5
Asymmetry
AC vs yttbar
CMS_2016_I1430892 8000 1.8 -0.30 1.5
Asymmetry
ACl vs Mttbar
CMS_2016_I1430892 8000 3.7 -3.2 0.50
Asymmetry
ACl vs pTttbar
CMS_2016_I1430892 8000 0.82 -0.44 0.38
Asymmetry
ACl vs yttbar
CMS_2016_I1430892 8000 1.2 +0.20 1.4
Asymmetry
Energy asymmetry
ATLAS_2021_I1941095 13000 1.5 -0.30 1.2
B jet
η
CMS_2018_I1703993 13000 20 0 20
B jet
pT
CMS_2018_I1703993 13000 21 +3.0 24
bjbj.m
CMS_2018_I1703993 13000 26 +4.0 30
bjbj.pt
CMS_2018_I1703993 13000 24 +1.0 25
bjt.dphi
ATLAS_2022_I2037744 13000 1.2 +0.20 1.4
ej.pt
ATLAS_2022_I2037744 13000 2.4* -0.30 2.1*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 1.6 +0.50 2.1
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 1.9 +0.40 2.3
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 1.3 +0.70 2.0
ΔR(extra jets)
ATLAS_2020_I1801434 13000 1.5 0 1.5
ejej.dphi
ATLAS_2022_I2037744 13000 0.58 +0.36 0.94
ejets.ht
CMS_2021_I1901295 13000 11 0 11
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.6 +0.50 3.1
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 1.5 +1.5 3.0
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.19 +0.060 0.25
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.093 -0.040 0.053
Jet mass
Jet mass
CMS_2017_I1518399 8000 1.4 +2.5 3.9
CMS_2019_I1764472 13000 0.71 -0.11 0.60
Jet pT
ATLAS_2014_I1304688 7000 6.3 +0.60 6.9
ATLAS_2019_I1718132 13000 n/a - n/a
Dijet
Δη
ATLAS_2019_I1718132 13000 9.2* -5.5 3.7
Dijet
Δφ
ATLAS_2019_I1718132 13000 12 -7.4 4.6
Dijet
HT
ATLAS_2019_I1718132 13000 n/a - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 12 -7.2 4.8
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 2.3 -0.20 2.1
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.39 -0.060 0.33
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.0 +0.10 2.1
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.3 -0.10 1.2
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.0 -0.10 1.9
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 3.2 +0.100 3.3
Lepton η
ATLAS_2019_I1759875 13000 14 +3.0 17
CMS_2018_I1703993 13000 12 +1.0 13
Lepton pT
ATLAS_2019_I1759875 13000 19 +4.0 23
CMS_2018_I1703993 13000 22 +3.0 25
CMS_2021_I1901295 13000 6.6 +1.5 8.1
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 5.0 +0.40 5.4
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.86 -0.14 0.72
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.9 -0.40 6.5
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 15* -8.1 6.9
Dilepton
E
ATLAS_2019_I1759875 13000 16 +4.0 20
Dilepton
Δη
CMS_2016_I1430892 8000 0.38 -0.070 0.31
CMS_2018_I1703993 13000 17 +1.0 18
Dilepton
Δφ
ATLAS_2019_I1718132 13000 10* -4.6 5.4
ATLAS_2019_I1759875 13000 12* +2.0 14
CMS_2018_I1703993 13000 21 +3.0 24
Dilepton
HT
ATLAS_2019_I1759875 13000 16 +4.0 20
Dilepton
m
ATLAS_2019_I1759875 13000 13 +6.0 19
CMS_2018_I1703993 13000 19 +2.0 21
Dilepton
pT
ATLAS_2019_I1718132 13000 7.6 -1.5 6.1
ATLAS_2019_I1759875 13000 16 +3.0 19
CMS_2018_I1703993 13000 18 +2.0 20
Dilepton
y
ATLAS_2019_I1759875 13000 12* +1.0 13
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 2.2 -0.80 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 15 -1.0 14
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 2.7 +3.0 5.7
CMS_2018_I1703993 13000 16 +4.0 20
sumpt
ATLAS_2022_I2152933 13000 3.2 -0.70 2.5
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.5 0 4.5
ATLAS_2020_I1801434 13000 2.2 +1.8 4.0
ATLAS_2022_I2077575 13000 2.7 -0.20 2.5
Top pT
ATLAS_2019_I1750330 13000 3.9* +0.10 4.0*
ATLAS_2020_I1801434 13000 2.0 +1.1 3.1
ATLAS_2022_I2037744 13000 2.1 -0.70 1.4*
ATLAS_2022_I2077575 13000 2.6* -0.70 1.9*
CMS_2018_I1703993 13000 26 +5.0 31
CMS_2021_I1901295 13000 14* -1.0 13*
top.pt.ttbarRF
CMS_2018_I1703993 13000 25 +5.0 30
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 2.9 +0.80 3.7
Top rapidity
ATLAS_2019_I1750330 13000 4.3 +0.10 4.4
ATLAS_2020_I1801434 13000 3.1 +1.1 4.2
ATLAS_2022_I2037744 13000 1.3 +0.20 1.5*
ATLAS_2022_I2077575 13000 3.0* -0.60 2.4*
CMS_2018_I1703993 13000 24 +1.0 25
CMS_2021_I1901295 13000 12 0 12
topej.dphi
ATLAS_2022_I2037744 13000 2.3 +0.90 3.2
topej.m
ATLAS_2022_I2037744 13000 1.4 -0.44 0.96
χ(ttbar)
ATLAS_2019_I1750330 13000 4.7 +0.40 5.1
ATLAS_2020_I1801434 13000 3.8 -0.50 3.3
ATLAS_2022_I2077575 13000 5.0* -1.0 4.0*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.7 -0.10 5.6
ATLAS_2020_I1801434 13000 2.7 +3.0 5.7
ATLAS_2022_I2037744 13000 0.61 +1.8 2.4
ATLAS_2022_I2077575 13000 4.0 -0.50 3.5
CMS_2018_I1703993 13000 38 +2.0 40
CMS_2021_I1901295 13000 21 -1.0 20
Δy (ttbar)
CMS_2016_I1430892 8000 0.097 -0.055 0.042
CMS_2018_I1703993 13000 25 +1.0 26
CMS_2021_I1901295 13000 14* -2.0 12
ttbar HT
ATLAS_2019_I1750330 13000 3.7 +0.30 4.0
ATLAS_2020_I1801434 13000 1.8 +1.2 3.0
ATLAS_2022_I2037744 13000 1.3 - n/a
ATLAS_2022_I2077575 13000 5.6* -1.7 3.9*
CMS_2021_I1901295 13000 12 0 12
m(ttbar)
ATLAS_2019_I1750330 13000 4.0* -0.40 3.6*
ATLAS_2020_I1801434 13000 2.1 +1.5 3.6
ATLAS_2022_I2037744 13000 1.1 - n/a
ATLAS_2022_I2077575 13000 2.3* -0.40 1.9*
CMS_2018_I1703993 13000 24 0 24
CMS_2021_I1901295 13000 17 -1.0 16
Pcrossttbar
ATLAS_2020_I1801434 13000 2.2 +1.6 3.8
ttbar pT
ATLAS_2019_I1750330 13000 4.5 +0.20 4.7
ATLAS_2020_I1801434 13000 2.0 +1.4 3.4
ATLAS_2022_I2037744 13000 0.35 +1.4 1.7
ATLAS_2022_I2077575 13000 3.0* -0.70 2.3*
CMS_2018_I1703993 13000 27 +2.0 29
CMS_2021_I1901295 13000 12 0 12
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 1.8 +2.0 3.8
ttbar.thetaStar
ATLAS_2022_I2077575 13000 5.5* -3.0 2.5
CMS_2021_I1901295 13000 18 -1.0 17
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.2 +0.100 4.3
ATLAS_2020_I1801434 13000 1.7 +1.2 2.9
ATLAS_2022_I2037744 13000 1.1 +0.40 1.5
ATLAS_2022_I2077575 13000 3.6 +0.70 4.3*
CMS_2018_I1703993 13000 23 +2.0 25
CMS_2021_I1901295 13000 15 0 15
Mean rapidity
ATLAS_2019_I1750330 13000 6.2 +0.20 6.4
ATLAS_2020_I1801434 13000 1.9 +1.0 2.9
ATLAS_2022_I2077575 13000 3.4 +0.90 4.3*
ttbarej.ht
ATLAS_2022_I2037744 13000 2.4 -0.10 2.3
ttbarej.m
CMS_2021_I1901295 13000 12 +1.0 13
pT ratio
W to b
ATLAS_2020_I1801434 13000 2.2 +1.2 3.4
pT ratio
W to top
ATLAS_2020_I1801434 13000 2.4 +0.70 3.1
Cross sections
ATLAS_2022_I2037744 13000 1.4 +1.3 2.7
ATLAS_2022_I2077575 13000 23 -6.0 17
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.