Generator

Details for Pythia 8.245 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 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 - 0.68
B jet
η
CMS_2018_I1703993 13000 18 -2.0 16
B jet
pT
CMS_2018_I1703993 13000 21 -1.0 20
bjbj.m
CMS_2018_I1703993 13000 26 -2.0 24
bjbj.pt
CMS_2018_I1703993 13000 22 -2.0 20
bjt.dphi
ATLAS_2022_I2037744 13000 2.5 -1.7 0.83
ej.pt
ATLAS_2022_I2037744 13000 2.5 -0.60 1.9*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 1.9 +0.40 2.3
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 2.5 -0.20 2.3
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 2.3 -0.20 2.1
ΔR(extra jets)
ATLAS_2020_I1801434 13000 1.7 +0.10 1.8
ejej.dphi
ATLAS_2022_I2037744 13000 1.2 -0.32 0.88
ejets.ht
CMS_2021_I1901295 13000 12 +1.0 13
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.7 -0.30 2.4
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.3 +0.20 2.5
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.14 +0.18 0.32
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.060 +0.031 0.091
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.25 +0.52 0.77
Jet pT
ATLAS_2014_I1304688 7000 6.3 0 6.3
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 1.7 +0.10 1.8
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.23 +0.070 0.30
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.1 -0.20 1.9
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.5 -0.20 1.3
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.8 +0.20 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 3.7 -0.90 2.8
Lepton η
ATLAS_2019_I1759875 13000 13 +2.0 15
CMS_2018_I1703993 13000 11 -1.3 9.7
Lepton pT
ATLAS_2019_I1759875 13000 17 +4.0 21
CMS_2018_I1703993 13000 21 -3.0 18
CMS_2021_I1901295 13000 6.4 -0.10 6.3
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 5.0 -0.60 4.4
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.74 -0.080 0.66
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.6 -1.0 5.6
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 14 +2.0 16
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 15 -1.0 14
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 11* +1.0 12
CMS_2018_I1703993 13000 20 +1.0 21
Dilepton
HT
ATLAS_2019_I1759875 13000 15 +1.0 16
Dilepton
m
ATLAS_2019_I1759875 13000 14 +3.0 17
CMS_2018_I1703993 13000 18 -1.0 17
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 16 +2.0 18
CMS_2018_I1703993 13000 17 0 17
Dilepton
y
ATLAS_2019_I1759875 13000 10 +1.0 11
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 2.7 -1.1 1.6
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 14 +1.0 15
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.6 -0.70 3.9
CMS_2018_I1703993 13000 16 -2.0 14
sumpt
ATLAS_2022_I2152933 13000 4.7 -1.7 3.0
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.2 +0.20 4.4
ATLAS_2020_I1801434 13000 3.7* -0.80 2.9
ATLAS_2022_I2077575 13000 4.5* +0.30 4.8*
Top pT
ATLAS_2019_I1750330 13000 3.3* +0.30 3.6
ATLAS_2020_I1801434 13000 3.3 -1.0 2.3*
ATLAS_2022_I2037744 13000 1.2 +1.1 2.3
ATLAS_2022_I2077575 13000 2.3* -0.100 2.2*
CMS_2018_I1703993 13000 24 +1.0 25
CMS_2021_I1901295 13000 12* 0 12*
top.pt.ttbarRF
CMS_2018_I1703993 13000 22 +2.0 24
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 3.9 -1.2 2.7
Top rapidity
ATLAS_2019_I1750330 13000 4.0 +0.30 4.3
ATLAS_2020_I1801434 13000 3.7 -0.90 2.8
ATLAS_2022_I2037744 13000 0.83 +0.12 0.95
ATLAS_2022_I2077575 13000 2.8* +0.10 2.9*
CMS_2018_I1703993 13000 21 +2.0 23
CMS_2021_I1901295 13000 11 0 11
topej.dphi
ATLAS_2022_I2037744 13000 2.0 +0.30 2.3
topej.m
ATLAS_2022_I2037744 13000 0.69 +0.020 0.71
χ(ttbar)
ATLAS_2019_I1750330 13000 4.5 +0.50 5.0
ATLAS_2020_I1801434 13000 3.7 -0.60 3.1
ATLAS_2022_I2077575 13000 4.0* -1.3 2.7
Δφ(ttbar)
ATLAS_2019_I1750330 13000 4.4 +0.50 4.9
ATLAS_2020_I1801434 13000 4.0 -0.30 3.7
ATLAS_2022_I2037744 13000 0.87 +1.5 2.4
ATLAS_2022_I2077575 13000 3.4 +0.10 3.5
CMS_2018_I1703993 13000 34 +5.0 39
CMS_2021_I1901295 13000 17 +2.0 19
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 23 0 23
CMS_2021_I1901295 13000 11 0 11
ttbar HT
ATLAS_2019_I1750330 13000 3.3 +0.20 3.5
ATLAS_2020_I1801434 13000 3.4 -0.90 2.5
ATLAS_2022_I2037744 13000 n/a - 1.3
ATLAS_2022_I2077575 13000 4.5* 0 4.5*
CMS_2021_I1901295 13000 10 0 10
m(ttbar)
ATLAS_2019_I1750330 13000 3.1* +0.60 3.7
ATLAS_2020_I1801434 13000 3.1 -0.30 2.8
ATLAS_2022_I2037744 13000 0.71 +0.59 1.3
ATLAS_2022_I2077575 13000 2.1* +0.20 2.3*
CMS_2018_I1703993 13000 22 0 22
CMS_2021_I1901295 13000 16 0 16
Pcrossttbar
ATLAS_2020_I1801434 13000 4.3 -0.70 3.6
ttbar pT
ATLAS_2019_I1750330 13000 4.2 +0.100 4.3
ATLAS_2020_I1801434 13000 3.5 -1.0 2.5
ATLAS_2022_I2037744 13000 0.36 +0.38 0.74
ATLAS_2022_I2077575 13000 2.8* -0.20 2.6*
CMS_2018_I1703993 13000 23 +2.0 25
CMS_2021_I1901295 13000 11 +1.0 12
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.7 -1.5 2.2
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.7 +0.30 3.0
CMS_2021_I1901295 13000 16 -1.0 15
Ttbar rapidity
ATLAS_2019_I1750330 13000 3.8 +0.30 4.1
ATLAS_2020_I1801434 13000 2.7 -0.80 1.9
ATLAS_2022_I2037744 13000 0.85 +0.55 1.4
ATLAS_2022_I2077575 13000 4.8* +0.90 5.7*
CMS_2018_I1703993 13000 22 +1.0 23
CMS_2021_I1901295 13000 14 0 14
Mean rapidity
ATLAS_2019_I1750330 13000 6.0 -0.30 5.7
ATLAS_2020_I1801434 13000 3.8 -1.6 2.2
ATLAS_2022_I2077575 13000 4.8* +0.80 5.6*
ttbarej.ht
ATLAS_2022_I2037744 13000 1.6 +0.50 2.1
ttbarej.m
CMS_2021_I1901295 13000 12 0 12
pT ratio
W to b
ATLAS_2020_I1801434 13000 3.0 +0.10 3.1
pT ratio
W to top
ATLAS_2020_I1801434 13000 3.4 0 3.4
Cross sections
ATLAS_2022_I2037744 13000 0.059 +0.31 0.37
ATLAS_2022_I2077575 13000 18 +2.0 20
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.