Generator

Details for Pythia 8.240 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 1.1 -0.16 0.94
B jet
η
CMS_2018_I1703993 13000 18 -3.0 15
B jet
pT
CMS_2018_I1703993 13000 21 -6.0 15
bjbj.m
CMS_2018_I1703993 13000 25 -6.0 19
bjbj.pt
CMS_2018_I1703993 13000 26 -10 16
bjt.dphi
ATLAS_2022_I2037744 13000 0.58 -0.070 0.51
ej.pt
ATLAS_2022_I2037744 13000 1.8* +0.30 2.1
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 2.6 0 2.6
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 2.7 -0.30 2.4
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.0 -0.30 2.7
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.7 -0.10 2.6
ejej.dphi
ATLAS_2022_I2037744 13000 3.7 -2.7 1.0
ejets.ht
CMS_2021_I1901295 13000 11 +1.0 12
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.4 +0.30 2.7
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.3 -0.100 2.2
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.29 +0.020 0.31
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.11 -0.013 0.097
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.038 +0.25 0.29
Jet pT
ATLAS_2014_I1304688 7000 6.8 -0.20 6.6
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 2.0 -0.20 1.8
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.30 -0.040 0.26
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.1 -0.10 2.0
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.4 0 1.4
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.2 -0.60 1.6
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 3.3 -0.50 2.8
Lepton η
ATLAS_2019_I1759875 13000 13 0 13
CMS_2018_I1703993 13000 12 -3.4 8.6
Lepton pT
ATLAS_2019_I1759875 13000 18 -1.0 17
CMS_2018_I1703993 13000 21 -6.0 15
CMS_2021_I1901295 13000 6.8 -0.60 6.2
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.9 -0.10 4.8
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.80 +0.010 0.81
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.1 -0.100 6.0
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 15 0 15
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 15 -2.0 13
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 13* -3.0 10
CMS_2018_I1703993 13000 23 -7.0 16
Dilepton
HT
ATLAS_2019_I1759875 13000 15 -1.0 14
Dilepton
m
ATLAS_2019_I1759875 13000 14 0 14
CMS_2018_I1703993 13000 21 -8.0 13
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 15 +1.0 16
CMS_2018_I1703993 13000 19 -5.0 14
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 -1.5 0.84
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 13
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 3.8 +1.8 5.6
CMS_2018_I1703993 13000 18 -6.0 12
sumpt
ATLAS_2022_I2152933 13000 3.9 -0.90 3.0
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.3 -0.30 4.0
ATLAS_2020_I1801434 13000 3.2 +0.40 3.6*
ATLAS_2022_I2077575 13000 3.6 -1.4 2.2
Top pT
ATLAS_2019_I1750330 13000 4.4* -0.90 3.5*
ATLAS_2020_I1801434 13000 2.6 +0.20 2.8
ATLAS_2022_I2037744 13000 1.9* -0.50 1.4
ATLAS_2022_I2077575 13000 2.6* -0.80 1.8*
CMS_2018_I1703993 13000 26 -4.0 22
CMS_2021_I1901295 13000 12 0 12
top.pt.ttbarRF
CMS_2018_I1703993 13000 25 -3.0 22
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 4.0 -0.30 3.7
Top rapidity
ATLAS_2019_I1750330 13000 4.1 -0.20 3.9
ATLAS_2020_I1801434 13000 4.2 -0.20 4.0
ATLAS_2022_I2037744 13000 1.2 -0.64 0.56
ATLAS_2022_I2077575 13000 3.2* -1.0 2.2*
CMS_2018_I1703993 13000 23 -3.0 20
CMS_2021_I1901295 13000 12 -1.0 11
topej.dphi
ATLAS_2022_I2037744 13000 2.2 -0.10 2.1
topej.m
ATLAS_2022_I2037744 13000 0.85 +0.35 1.2
χ(ttbar)
ATLAS_2019_I1750330 13000 4.6 +0.20 4.8
ATLAS_2020_I1801434 13000 3.3 -0.50 2.8
ATLAS_2022_I2077575 13000 4.6* -2.5 2.1
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.6 -0.50 5.1
ATLAS_2020_I1801434 13000 3.2 +1.2 4.4
ATLAS_2022_I2037744 13000 1.0 +0.50 1.5
ATLAS_2022_I2077575 13000 4.1 -1.5 2.6
CMS_2018_I1703993 13000 38 -5.0 33
CMS_2021_I1901295 13000 20 -1.0 19
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 23 -3.0 20
CMS_2021_I1901295 13000 11 0 11
ttbar HT
ATLAS_2019_I1750330 13000 3.5 -0.40 3.1
ATLAS_2020_I1801434 13000 2.9 +0.70 3.6
ATLAS_2022_I2037744 13000 n/a - 1.2
ATLAS_2022_I2077575 13000 3.2 +0.40 3.6*
CMS_2021_I1901295 13000 11 0 11
m(ttbar)
ATLAS_2019_I1750330 13000 2.9* -0.10 2.8
ATLAS_2020_I1801434 13000 3.3 -0.100 3.2
ATLAS_2022_I2037744 13000 0.56 +0.74 1.3
ATLAS_2022_I2077575 13000 2.6* -0.80 1.8*
CMS_2018_I1703993 13000 24 -5.0 19
CMS_2021_I1901295 13000 15 +1.0 16
Pcrossttbar
ATLAS_2020_I1801434 13000 3.2 0 3.2
ttbar pT
ATLAS_2019_I1750330 13000 4.7* -0.90 3.8
ATLAS_2020_I1801434 13000 2.6 +0.70 3.3
ATLAS_2022_I2037744 13000 0.74 +0.36 1.1
ATLAS_2022_I2077575 13000 2.3 -0.100 2.2*
CMS_2018_I1703993 13000 26 +7.0 33*
CMS_2021_I1901295 13000 11 -1.0 10
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 2.8 +0.40 3.2
ttbar.thetaStar
ATLAS_2022_I2077575 13000 5.2* -2.9 2.3
CMS_2021_I1901295 13000 16 +1.0 17
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.2 -0.50 3.7
ATLAS_2020_I1801434 13000 2.6 -0.20 2.4*
ATLAS_2022_I2037744 13000 n/a - 1.1
ATLAS_2022_I2077575 13000 3.3 -0.20 3.1*
CMS_2018_I1703993 13000 22 -1.0 21
CMS_2021_I1901295 13000 14 0 14
Mean rapidity
ATLAS_2019_I1750330 13000 6.2 -0.40 5.8
ATLAS_2020_I1801434 13000 3.4 -0.10 3.3
ATLAS_2022_I2077575 13000 3.0 +0.20 3.2*
ttbarej.ht
ATLAS_2022_I2037744 13000 1.6 -0.90 0.70
ttbarej.m
CMS_2021_I1901295 13000 12 0 12
pT ratio
W to b
ATLAS_2020_I1801434 13000 3.9 -0.20 3.7
pT ratio
W to top
ATLAS_2020_I1801434 13000 3.6 +0.90 4.5
Cross sections
ATLAS_2022_I2037744 13000 0.91 -0.91 0.0042
ATLAS_2022_I2077575 13000 21 -10 11
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.