Generator

Details for Pythia 8.210 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 0.72 -0.020 0.70
B jet
η
CMS_2018_I1703993 13000 17 +7.0 24
B jet
pT
CMS_2018_I1703993 13000 22 +5.0 27
bjbj.m
CMS_2018_I1703993 13000 29 +8.0 37
bjbj.pt
CMS_2018_I1703993 13000 22 +6.0 28
bjt.dphi
ATLAS_2022_I2037744 13000 1.2 -0.22 0.98
ej.pt
ATLAS_2022_I2037744 13000 2.1 +0.40 2.5*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 1.8 +0.40 2.2
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 1.5 +0.70 2.2
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 1.8 +0.80 2.6
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.2 -0.20 2.0
ejej.dphi
ATLAS_2022_I2037744 13000 0.55 -0.030 0.52
ejets.ht
CMS_2021_I1901295 13000 13 -1.0 12
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.4 +0.10 2.5
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.3 -0.50 1.8
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.22 -0.19 0.032
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.081 -0.049 0.032
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.35 +0.040 0.39
Jet pT
ATLAS_2014_I1304688 7000 6.8 -0.60 6.2
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 2.3 +0.30 2.6
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.38 +0.010 0.39
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.4 -0.60 1.8
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.5 -0.51 0.99
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.3 -0.70 1.6
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 3.1 -0.60 2.5
Lepton η
ATLAS_2019_I1759875 13000 12 +3.0 15
CMS_2018_I1703993 13000 11 +3.0 14
Lepton pT
ATLAS_2019_I1759875 13000 17 +4.0 21
CMS_2018_I1703993 13000 21 +6.0 27
CMS_2021_I1901295 13000 6.7 +0.100 6.8
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.8 +0.30 5.1
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.75 +0.060 0.81
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 5.4 +0.90 6.3
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 15 +4.0 19
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 14* -3.0 11
CMS_2018_I1703993 13000 24 +4.0 28
Dilepton
HT
ATLAS_2019_I1759875 13000 14 +3.0 17
Dilepton
m
ATLAS_2019_I1759875 13000 13 +4.0 17
CMS_2018_I1703993 13000 20 +4.0 24
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 15 +3.0 18
CMS_2018_I1703993 13000 18 +5.0 23
Dilepton
y
ATLAS_2019_I1759875 13000 9.9 +2.1 12
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 2.5 -0.80 1.7
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 2.6 +1.8 4.4
CMS_2018_I1703993 13000 16 +4.0 20
sumpt
ATLAS_2022_I2152933 13000 3.0 -1.2 1.8
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.3 +0.20 4.5
ATLAS_2020_I1801434 13000 2.2 +1.8 4.0
ATLAS_2022_I2077575 13000 2.5 +0.80 3.3
Top pT
ATLAS_2019_I1750330 13000 3.6* +0.20 3.8*
ATLAS_2020_I1801434 13000 2.1 +0.70 2.8
ATLAS_2022_I2037744 13000 0.93 -0.45 0.48
ATLAS_2022_I2077575 13000 2.3* +0.10 2.4*
CMS_2018_I1703993 13000 28 +5.0 33
CMS_2021_I1901295 13000 12* +1.0 13*
top.pt.ttbarRF
CMS_2018_I1703993 13000 28 +4.0 32
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 2.8 +1.1 3.9
Top rapidity
ATLAS_2019_I1750330 13000 4.3 0 4.3
ATLAS_2020_I1801434 13000 2.7 +1.3 4.0
ATLAS_2022_I2037744 13000 1.8 -0.70 1.1*
ATLAS_2022_I2077575 13000 2.5* +0.20 2.7*
CMS_2018_I1703993 13000 23 +4.0 27
CMS_2021_I1901295 13000 11 +1.0 12
topej.dphi
ATLAS_2022_I2037744 13000 1.7 +0.40 2.1
topej.m
ATLAS_2022_I2037744 13000 0.48 +0.42 0.90
χ(ttbar)
ATLAS_2019_I1750330 13000 4.7 -0.10 4.6
ATLAS_2020_I1801434 13000 2.0 +1.9 3.9
ATLAS_2022_I2077575 13000 3.7* +1.2 4.9*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.1 0 5.1
ATLAS_2020_I1801434 13000 2.7 +1.1 3.8
ATLAS_2022_I2037744 13000 0.22 - n/a
ATLAS_2022_I2077575 13000 2.9 +0.70 3.6
CMS_2018_I1703993 13000 39 +8.0 47
CMS_2021_I1901295 13000 18 +4.0 22
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 24 +4.0 28
CMS_2021_I1901295 13000 11 +1.0 12
ttbar HT
ATLAS_2019_I1750330 13000 3.4 +0.10 3.5
ATLAS_2020_I1801434 13000 2.1 +1.0 3.1
ATLAS_2022_I2037744 13000 0.70 -0.090 0.61
ATLAS_2022_I2077575 13000 4.2* - n/a
CMS_2021_I1901295 13000 10 +2.0 12
m(ttbar)
ATLAS_2019_I1750330 13000 2.7 +0.20 2.9
ATLAS_2020_I1801434 13000 1.7 +1.2 2.9
ATLAS_2022_I2037744 13000 1.4 - n/a
ATLAS_2022_I2077575 13000 2.3* 0 2.3*
CMS_2018_I1703993 13000 24 +5.0 29
CMS_2021_I1901295 13000 16 +1.0 17
Pcrossttbar
ATLAS_2020_I1801434 13000 2.0 +1.0 3.0
ttbar pT
ATLAS_2019_I1750330 13000 4.3 +0.10 4.4
ATLAS_2020_I1801434 13000 1.9 +2.1 4.0
ATLAS_2022_I2037744 13000 0.27 +1.6 1.9
ATLAS_2022_I2077575 13000 2.2* +0.20 2.4
CMS_2018_I1703993 13000 23 +7.0 30
CMS_2021_I1901295 13000 12 +1.0 13*
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 2.2 +0.70 2.9
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.5 +0.80 3.3
CMS_2021_I1901295 13000 16 +1.0 17
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.0 0 4.0
ATLAS_2020_I1801434 13000 1.4 +0.80 2.2
ATLAS_2022_I2037744 13000 0.36 +0.23 0.59
ATLAS_2022_I2077575 13000 2.3 +0.70 3.0
CMS_2018_I1703993 13000 23 +4.0 27
CMS_2021_I1901295 13000 14 +1.0 15
Mean rapidity
ATLAS_2019_I1750330 13000 6.2 -0.20 6.0
ATLAS_2020_I1801434 13000 1.8 +1.1 2.9
ATLAS_2022_I2077575 13000 2.5 +0.50 3.0
ttbarej.ht
ATLAS_2022_I2037744 13000 0.94 -0.14 0.80
ttbarej.m
CMS_2021_I1901295 13000 12 +1.0 13
pT ratio
W to b
ATLAS_2020_I1801434 13000 2.8 +0.20 3.0
pT ratio
W to top
ATLAS_2020_I1801434 13000 2.2 +1.1 3.3
Cross sections
ATLAS_2022_I2037744 13000 0.00038 +0.097 0.097
ATLAS_2022_I2077575 13000 15 +6.0 21
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.