Generator

Details for Pythia 8.307 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 0.55 +2.4 2.9
Asymmetry
AC vs pTttbar
CMS_2016_I1430892 8000 11 +1.0 12
Asymmetry
AC vs yttbar
CMS_2016_I1430892 8000 1.6 +4.5 6.1
Asymmetry
ACl vs Mttbar
CMS_2016_I1430892 8000 4.6 -0.60 4.0
Asymmetry
ACl vs pTttbar
CMS_2016_I1430892 8000 0.92 +3.0 3.9
Asymmetry
ACl vs yttbar
CMS_2016_I1430892 8000 1.1 +3.5 4.6
Asymmetry
Energy asymmetry
ATLAS_2021_I1941095 13000 0.54 +0.090 0.63
B jet
η
CMS_2018_I1703993 13000 17 +2.0 19
B jet
pT
CMS_2018_I1703993 13000 20 +5.0 25
bjbj.m
CMS_2018_I1703993 13000 24 +5.0 29
bjbj.pt
CMS_2018_I1703993 13000 21 +4.0 25
bjt.dphi
ATLAS_2022_I2037744 13000 0.53 +0.29 0.82
ej.pt
ATLAS_2022_I2037744 13000 2.3 +0.10 2.4*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 1.9 +2.8 4.7
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 1.6 +2.6 4.2
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 1.5 +3.6 5.1
ΔR(extra jets)
ATLAS_2020_I1801434 13000 1.0 +2.2 3.2
ejej.dphi
ATLAS_2022_I2037744 13000 0.65 +0.21 0.86
ejets.ht
CMS_2021_I1901295 13000 12 -2.0 10
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.4 -0.20 3.2
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 1.3 +1.8 3.1
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.11 +0.080 0.19
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.043 +0.046 0.089
Jet mass
Jet mass
CMS_2017_I1518399 8000 3.0 +0.80 3.8
CMS_2019_I1764472 13000 0.59 -0.15 0.44
Jet pT
ATLAS_2014_I1304688 7000 6.7 +0.20 6.9
ATLAS_2019_I1718132 13000 n/a - 4.3*
Dijet
Δη
ATLAS_2019_I1718132 13000 5.8 -1.5 4.3
Dijet
Δφ
ATLAS_2019_I1718132 13000 8.0 -2.9 5.1
Dijet
HT
ATLAS_2019_I1718132 13000 n/a - 3.2
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 10 -5.0 5.0
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 1.8 +0.30 2.1
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.29 0 0.29
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.0 -0.20 1.8
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.2 0 1.2
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.9 +0.10 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.6 +0.20 2.8
Lepton η
ATLAS_2019_I1759875 13000 14 0 14
CMS_2018_I1703993 13000 11 +1.0 12
Lepton pT
ATLAS_2019_I1759875 13000 18 +2.0 20
CMS_2018_I1703993 13000 20 +4.0 24
CMS_2021_I1901295 13000 6.9 -0.90 6.0
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.9 0 4.9
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.70 -0.080 0.62
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.3 -0.50 5.8
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 11* -2.4 8.6*
Dilepton
E
ATLAS_2019_I1759875 13000 17 -1.0 16
Dilepton
Δη
CMS_2016_I1430892 8000 0.46 -0.040 0.42
CMS_2018_I1703993 13000 15 +2.0 17
Dilepton
Δφ
ATLAS_2019_I1718132 13000 7.7 -2.4 5.3
ATLAS_2019_I1759875 13000 11 0 11
CMS_2018_I1703993 13000 20 +10 30
Dilepton
HT
ATLAS_2019_I1759875 13000 15 +1.0 16
Dilepton
m
ATLAS_2019_I1759875 13000 15 -1.0 14
CMS_2018_I1703993 13000 21 +5.0 26
Dilepton
pT
ATLAS_2019_I1718132 13000 6.5 -0.40 6.1
ATLAS_2019_I1759875 13000 16 0 16
CMS_2018_I1703993 13000 16 +5.0 21
Dilepton
y
ATLAS_2019_I1759875 13000 11 0 11
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 1.1 +3.1 4.2
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 3.9 +0.40 4.3
CMS_2018_I1703993 13000 16 +3.0 19
sumpt
ATLAS_2022_I2152933 13000 3.3 +1.9 5.2
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.7 -0.20 4.5
ATLAS_2020_I1801434 13000 3.8 -0.80 3.0
ATLAS_2022_I2077575 13000 2.9 -0.40 2.5
Top pT
ATLAS_2019_I1750330 13000 3.8* -0.70 3.1
ATLAS_2020_I1801434 13000 3.0 0 3.0
ATLAS_2022_I2037744 13000 1.0 +0.70 1.7
ATLAS_2022_I2077575 13000 2.3* -0.30 2.0*
CMS_2018_I1703993 13000 28 +3.0 31
CMS_2021_I1901295 13000 14* -2.0 12*
top.pt.ttbarRF
CMS_2018_I1703993 13000 26 +4.0 30
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 3.2 +2.4 5.6
Top rapidity
ATLAS_2019_I1750330 13000 4.5 -0.70 3.8
ATLAS_2020_I1801434 13000 2.7 +1.3 4.0
ATLAS_2022_I2037744 13000 0.73 +0.47 1.2
ATLAS_2022_I2077575 13000 2.5* +0.10 2.6*
CMS_2018_I1703993 13000 23 +3.0 26
CMS_2021_I1901295 13000 13 -2.0 11
topej.dphi
ATLAS_2022_I2037744 13000 3.5 -1.1 2.4
topej.m
ATLAS_2022_I2037744 13000 1.1 -0.19 0.91
χ(ttbar)
ATLAS_2019_I1750330 13000 4.7 -0.50 4.2
ATLAS_2020_I1801434 13000 4.5 -0.90 3.6
ATLAS_2022_I2077575 13000 4.1* 0 4.1*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.8 -1.4 4.4
ATLAS_2020_I1801434 13000 3.8 -0.30 3.5
ATLAS_2022_I2037744 13000 3.1 - n/a
ATLAS_2022_I2077575 13000 3.1 -0.10 3.0
CMS_2018_I1703993 13000 35 +9.0 44
CMS_2021_I1901295 13000 22 -3.0 19
Δy (ttbar)
CMS_2016_I1430892 8000 0.37 -0.030 0.34
CMS_2018_I1703993 13000 26 0 26
CMS_2021_I1901295 13000 13 -2.0 11
ttbar HT
ATLAS_2019_I1750330 13000 3.8 -0.40 3.4
ATLAS_2020_I1801434 13000 2.2 +1.1 3.3
ATLAS_2022_I2037744 13000 0.65 - n/a
ATLAS_2022_I2077575 13000 4.0* -1.5 2.5
CMS_2021_I1901295 13000 12 -1.0 11
m(ttbar)
ATLAS_2019_I1750330 13000 3.6* -0.60 3.0*
ATLAS_2020_I1801434 13000 2.8 +0.50 3.3
ATLAS_2022_I2037744 13000 0.85 +0.85 1.7
ATLAS_2022_I2077575 13000 2.0* -0.10 1.9*
CMS_2018_I1703993 13000 22 +3.0 25
CMS_2021_I1901295 13000 18 -2.0 16*
Pcrossttbar
ATLAS_2020_I1801434 13000 2.8 +2.1 4.9
ttbar pT
ATLAS_2019_I1750330 13000 4.6 -0.70 3.9
ATLAS_2020_I1801434 13000 3.2 0 3.2
ATLAS_2022_I2037744 13000 1.4 +0.10 1.5
ATLAS_2022_I2077575 13000 2.5* -0.30 2.2
CMS_2018_I1703993 13000 22 +5.0 27
CMS_2021_I1901295 13000 14 -3.0 11
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 2.5 +2.3 4.8
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.8 -0.100 2.7
CMS_2021_I1901295 13000 19 -3.0 16
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.3 -0.50 3.8
ATLAS_2020_I1801434 13000 2.5 +0.40 2.9
ATLAS_2022_I2037744 13000 0.56 +0.42 0.98
ATLAS_2022_I2077575 13000 2.7 -0.20 2.5
CMS_2018_I1703993 13000 23 +2.0 25
CMS_2021_I1901295 13000 17 -3.0 14
Mean rapidity
ATLAS_2019_I1750330 13000 6.8 -1.1 5.7
ATLAS_2020_I1801434 13000 2.2 +2.1 4.3
ATLAS_2022_I2077575 13000 3.0 -0.60 2.4
ttbarej.ht
ATLAS_2022_I2037744 13000 1.2 -0.55 0.65
ttbarej.m
CMS_2021_I1901295 13000 14 -2.0 12
pT ratio
W to b
ATLAS_2020_I1801434 13000 2.3 +1.3 3.6
pT ratio
W to top
ATLAS_2020_I1801434 13000 2.3 +1.7 4.0
Cross sections
ATLAS_2022_I2037744 13000 0.28 -0.27 0.013
ATLAS_2022_I2077575 13000 16 +1.0 17
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.