Generator

Details for Pythia 8.186 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 0.22 - n/a
B jet
η
CMS_2018_I1703993 13000 18 +5.0 23
B jet
pT
CMS_2018_I1703993 13000 24 +6.0 30
bjbj.m
CMS_2018_I1703993 13000 27 +6.0 33
bjbj.pt
CMS_2018_I1703993 13000 34 +2.0 36
bjt.dphi
ATLAS_2022_I2037744 13000 4.6 -0.60 4.0
ej.pt
ATLAS_2022_I2037744 13000 7.3 -0.100 7.2
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 1.4 -0.50 0.90
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 1.7 +1.0 2.7
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 2.3 +0.90 3.2
ΔR(extra jets)
ATLAS_2020_I1801434 13000 0.79 +0.090 0.88
ejej.dphi
ATLAS_2022_I2037744 13000 5.1 -1.0 4.1
ejets.ht
CMS_2021_I1901295 13000 22 -1.0 21
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.1 +0.80 3.9
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 0.83 +0.17 1.0
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 1.5 +0.50 2.0
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.88 +0.72 1.6
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.1 +0.80 1.9
Jet pT
ATLAS_2014_I1304688 7000 8.8 +0.30 9.1
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 2.5 +0.20 2.7
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.28 +0.100 0.38
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.8 +0.60 2.4
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.2 +0.50 1.7
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.1 +0.30 2.4
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.9 +0.60 3.5
Lepton η
ATLAS_2019_I1759875 13000 14 0 14
CMS_2018_I1703993 13000 12 +2.0 14
Lepton pT
ATLAS_2019_I1759875 13000 20 -1.0 19
CMS_2018_I1703993 13000 21 +6.0 27
CMS_2021_I1901295 13000 4.7 +1.1 5.8
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 5.6 -0.70 4.9
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.78 -0.14 0.64
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 7.2 -0.60 6.6
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 15 +2.0 17
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 16 +1.0 17
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 9.4 -0.30 9.1
CMS_2018_I1703993 13000 16 +7.0 23
Dilepton
HT
ATLAS_2019_I1759875 13000 17 +1.0 18
Dilepton
m
ATLAS_2019_I1759875 13000 15 -1.0 14
CMS_2018_I1703993 13000 17 +9.0 26
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 19 +2.0 21
CMS_2018_I1703993 13000 18 +7.0 25
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 2.3 -1.00 1.3
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 16
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 5.0 +3.1 8.1
CMS_2018_I1703993 13000 28 +10 38
sumpt
ATLAS_2022_I2152933 13000 4.7 -1.1 3.6
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 13 -1.0 12
ATLAS_2020_I1801434 13000 4.5 +2.2 6.7
ATLAS_2022_I2077575 13000 5.2 +0.30 5.5
Top pT
ATLAS_2019_I1750330 13000 7.5 -0.20 7.3
ATLAS_2020_I1801434 13000 1.8 +1.7 3.5
ATLAS_2022_I2037744 13000 6.2 0 6.2
ATLAS_2022_I2077575 13000 2.9* -0.50 2.4*
CMS_2018_I1703993 13000 42 +6.0 48
CMS_2021_I1901295 13000 15* +1.0 16
top.pt.ttbarRF
CMS_2018_I1703993 13000 31 +3.0 34
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 1.5 +1.2 2.7
Top rapidity
ATLAS_2019_I1750330 13000 5.3 -0.100 5.2
ATLAS_2020_I1801434 13000 1.9 0 1.9
ATLAS_2022_I2037744 13000 2.3 +0.10 2.4
ATLAS_2022_I2077575 13000 3.8* -0.60 3.2*
CMS_2018_I1703993 13000 26 +3.0 29
CMS_2021_I1901295 13000 9.0 +1.0 10
topej.dphi
ATLAS_2022_I2037744 13000 6.3 0 6.3
topej.m
ATLAS_2022_I2037744 13000 6.8 +0.70 7.5
χ(ttbar)
ATLAS_2019_I1750330 13000 5.6 +0.50 6.1
ATLAS_2020_I1801434 13000 1.3 +1.9 3.2
ATLAS_2022_I2077575 13000 7.5* -1.2 6.3*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 6.9 +0.60 7.5
ATLAS_2020_I1801434 13000 4.7 +4.6 9.3
ATLAS_2022_I2037744 13000 14 -3.0 11
ATLAS_2022_I2077575 13000 6.2 +0.20 6.4
CMS_2018_I1703993 13000 60 +14 74
CMS_2021_I1901295 13000 16 +2.0 18
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 32 +3.0 35
CMS_2021_I1901295 13000 7.9 +2.1 10
ttbar HT
ATLAS_2019_I1750330 13000 8.3 0 8.3
ATLAS_2020_I1801434 13000 0.87 +1.0 1.9
ATLAS_2022_I2037744 13000 4.4 -0.80 3.6
ATLAS_2022_I2077575 13000 4.1 +1.7 5.8*
CMS_2021_I1901295 13000 12 +1.0 13
m(ttbar)
ATLAS_2019_I1750330 13000 4.3 +0.50 4.8
ATLAS_2020_I1801434 13000 1.7 +1.0 2.7
ATLAS_2022_I2037744 13000 5.1 -1.0 4.1
ATLAS_2022_I2077575 13000 1.8* 0 1.8*
CMS_2018_I1703993 13000 28 +6.0 34
CMS_2021_I1901295 13000 14* +2.0 16
Pcrossttbar
ATLAS_2020_I1801434 13000 2.8 -0.80 2.0*
ttbar pT
ATLAS_2019_I1750330 13000 13 -1.0 12
ATLAS_2020_I1801434 13000 3.8 +1.4 5.2
ATLAS_2022_I2037744 13000 11 +3.0 14
ATLAS_2022_I2077575 13000 3.3* +0.20 3.5*
CMS_2018_I1703993 13000 60 +9.0 69
CMS_2021_I1901295 13000 18 0 18
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 1.6 +1.9 3.5
ttbar.thetaStar
ATLAS_2022_I2077575 13000 4.8 -0.40 4.4
CMS_2021_I1901295 13000 12 +3.0 15
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.7 0 4.7
ATLAS_2020_I1801434 13000 1.8 -0.10 1.7
ATLAS_2022_I2037744 13000 3.3 -0.80 2.5
ATLAS_2022_I2077575 13000 3.7 +2.1 5.8*
CMS_2018_I1703993 13000 23 +3.0 26
CMS_2021_I1901295 13000 9.6 +3.4 13
Mean rapidity
ATLAS_2019_I1750330 13000 4.0 +0.50 4.5
ATLAS_2020_I1801434 13000 1.4 -0.20 1.2
ATLAS_2022_I2077575 13000 3.8 +1.8 5.6*
ttbarej.ht
ATLAS_2022_I2037744 13000 14 +4.0 18
ttbarej.m
CMS_2021_I1901295 13000 14 +2.0 16
pT ratio
W to b
ATLAS_2020_I1801434 13000 1.9 -0.20 1.7
pT ratio
W to top
ATLAS_2020_I1801434 13000 1.7 0 1.7
Cross sections
ATLAS_2022_I2037744 13000 29 -6.0 23
ATLAS_2022_I2077575 13000 27 -5.0 22
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.