Generator

Details for Pythia 8.245 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 0.86 - n/a
B jet
η
CMS_2018_I1703993 13000 21 -3.0 18
B jet
pT
CMS_2018_I1703993 13000 25 -4.0 21
bjbj.m
CMS_2018_I1703993 13000 36 -10 26
bjbj.pt
CMS_2018_I1703993 13000 30 -8.0 22
bjt.dphi
ATLAS_2022_I2037744 13000 1.4 +1.1 2.5
ej.pt
ATLAS_2022_I2037744 13000 2.4* +0.10 2.5
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 3.5 -1.6 1.9
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 3.2 -0.70 2.5
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 2.5 -0.20 2.3
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.3 -0.60 1.7
ejej.dphi
ATLAS_2022_I2037744 13000 1.9 -0.70 1.2
ejets.ht
CMS_2021_I1901295 13000 12 0 12
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.1 +0.60 2.7
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.2 +0.100 2.3
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.38 -0.24 0.14
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.11 -0.050 0.060
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.58 -0.33 0.25
Jet pT
ATLAS_2014_I1304688 7000 6.4 -0.10 6.3
ATLAS_2019_I1718132 13000 9.0* - n/a
Dijet
Δη
ATLAS_2019_I1718132 13000 8.3 - n/a
Dijet
Δφ
ATLAS_2019_I1718132 13000 7.9 - n/a
Dijet
HT
ATLAS_2019_I1718132 13000 n/a - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 8.9 - n/a
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 2.2 -0.50 1.7
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.34 -0.11 0.23
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.7 +0.40 2.1
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.0 +0.50 1.5
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.7 +0.10 1.8
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.5 +1.2 3.7
Lepton η
ATLAS_2019_I1759875 13000 14 -1.0 13
CMS_2018_I1703993 13000 14 -3.0 11
Lepton pT
ATLAS_2019_I1759875 13000 19 -2.0 17
CMS_2018_I1703993 13000 25 -4.0 21
CMS_2021_I1901295 13000 6.5 -0.100 6.4
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.8 +0.20 5.0
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.71 +0.030 0.74
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.5 +0.100 6.6
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 11* - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 15 -1.0 14
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 18 -3.0 15
Dilepton
Δφ
ATLAS_2019_I1718132 13000 18* - n/a
ATLAS_2019_I1759875 13000 13* -2.0 11*
CMS_2018_I1703993 13000 24 -4.0 20
Dilepton
HT
ATLAS_2019_I1759875 13000 15 0 15
Dilepton
m
ATLAS_2019_I1759875 13000 16 -2.0 14
CMS_2018_I1703993 13000 23 -5.0 18
Dilepton
pT
ATLAS_2019_I1718132 13000 5.7 - n/a
ATLAS_2019_I1759875 13000 18 -2.0 16
CMS_2018_I1703993 13000 23 -6.0 17
Dilepton
y
ATLAS_2019_I1759875 13000 11 -1.0 10
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 2.3 +0.40 2.7
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 13 +1.0 14
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.4 +0.20 4.6
CMS_2018_I1703993 13000 21 -5.0 16
sumpt
ATLAS_2022_I2152933 13000 3.8 +0.90 4.7
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.5 -0.30 4.2
ATLAS_2020_I1801434 13000 3.6 +0.10 3.7*
ATLAS_2022_I2077575 13000 2.6 +1.9 4.5*
Top pT
ATLAS_2019_I1750330 13000 3.6* -0.30 3.3*
ATLAS_2020_I1801434 13000 2.8 +0.50 3.3
ATLAS_2022_I2037744 13000 n/a - 1.2
ATLAS_2022_I2077575 13000 2.1* +0.20 2.3*
CMS_2018_I1703993 13000 29 -5.0 24
CMS_2021_I1901295 13000 13* -1.0 12*
top.pt.ttbarRF
CMS_2018_I1703993 13000 28 -6.0 22
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 3.9 0 3.9
Top rapidity
ATLAS_2019_I1750330 13000 4.2 -0.20 4.0
ATLAS_2020_I1801434 13000 3.4 +0.30 3.7
ATLAS_2022_I2037744 13000 1.2* -0.37 0.83
ATLAS_2022_I2077575 13000 2.3* +0.50 2.8*
CMS_2018_I1703993 13000 25 -4.0 21
CMS_2021_I1901295 13000 11 0 11
topej.dphi
ATLAS_2022_I2037744 13000 2.4 -0.40 2.0
topej.m
ATLAS_2022_I2037744 13000 0.29 +0.40 0.69
χ(ttbar)
ATLAS_2019_I1750330 13000 5.0 -0.50 4.5
ATLAS_2020_I1801434 13000 3.2 +0.50 3.7
ATLAS_2022_I2077575 13000 2.3 +1.7 4.0*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 4.4 0 4.4
ATLAS_2020_I1801434 13000 3.7 +0.30 4.0
ATLAS_2022_I2037744 13000 n/a - 0.87
ATLAS_2022_I2077575 13000 2.7 +0.70 3.4
CMS_2018_I1703993 13000 42 -8.0 34
CMS_2021_I1901295 13000 18 -1.0 17
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 26 -3.0 23
CMS_2021_I1901295 13000 11 0 11
ttbar HT
ATLAS_2019_I1750330 13000 3.7 -0.40 3.3
ATLAS_2020_I1801434 13000 3.0 +0.40 3.4
ATLAS_2022_I2037744 13000 n/a - n/a
ATLAS_2022_I2077575 13000 3.8* +0.70 4.5*
CMS_2021_I1901295 13000 10 0 10
m(ttbar)
ATLAS_2019_I1750330 13000 4.0* -0.90 3.1*
ATLAS_2020_I1801434 13000 2.7 +0.40 3.1
ATLAS_2022_I2037744 13000 n/a - 0.71
ATLAS_2022_I2077575 13000 1.9* +0.20 2.1*
CMS_2018_I1703993 13000 25 -3.0 22
CMS_2021_I1901295 13000 17 -1.0 16
Pcrossttbar
ATLAS_2020_I1801434 13000 3.3 +1.0 4.3
ttbar pT
ATLAS_2019_I1750330 13000 4.3 -0.100 4.2
ATLAS_2020_I1801434 13000 3.0 +0.50 3.5
ATLAS_2022_I2037744 13000 0.72 -0.36 0.36
ATLAS_2022_I2077575 13000 2.0* +0.80 2.8*
CMS_2018_I1703993 13000 27 -4.0 23
CMS_2021_I1901295 13000 12 -1.0 11
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.0 +0.70 3.7
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.5 +0.20 2.7
CMS_2021_I1901295 13000 16 0 16
Ttbar rapidity
ATLAS_2019_I1750330 13000 3.9 -0.10 3.8
ATLAS_2020_I1801434 13000 2.6 +0.10 2.7
ATLAS_2022_I2037744 13000 0.85 0 0.85
ATLAS_2022_I2077575 13000 2.7 +2.1 4.8*
CMS_2018_I1703993 13000 24 -2.0 22
CMS_2021_I1901295 13000 15 -1.0 14
Mean rapidity
ATLAS_2019_I1750330 13000 5.7 +0.30 6.0
ATLAS_2020_I1801434 13000 2.8 +1.0 3.8
ATLAS_2022_I2077575 13000 2.6 +2.2 4.8*
ttbarej.ht
ATLAS_2022_I2037744 13000 0.86 +0.74 1.6
ttbarej.m
CMS_2021_I1901295 13000 n/a - 12
pT ratio
W to b
ATLAS_2020_I1801434 13000 2.9 +0.10 3.0
pT ratio
W to top
ATLAS_2020_I1801434 13000 3.6 -0.20 3.4
Cross sections
ATLAS_2022_I2037744 13000 0.90 -0.84 0.059
ATLAS_2022_I2077575 13000 16 +2.0 18
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.