Generator

Details for Pythia 8.303 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 0.60 +0.80 1.4
Asymmetry
AC vs pTttbar
CMS_2016_I1430892 8000 5.5 +9.5 15
Asymmetry
AC vs yttbar
CMS_2016_I1430892 8000 2.6 +2.0 4.6
Asymmetry
ACl vs Mttbar
CMS_2016_I1430892 8000 0.48 +2.7 3.2
Asymmetry
ACl vs pTttbar
CMS_2016_I1430892 8000 0.78 +3.9 4.7
Asymmetry
ACl vs yttbar
CMS_2016_I1430892 8000 2.3 +3.2 5.5
Asymmetry
Energy asymmetry
ATLAS_2021_I1941095 13000 0.99 -0.47 0.52
B jet
η
CMS_2018_I1703993 13000 22 -3.0 19
B jet
pT
CMS_2018_I1703993 13000 26 -4.0 22
bjbj.m
CMS_2018_I1703993 13000 32 -6.0 26
bjbj.pt
CMS_2018_I1703993 13000 30 -7.0 23
bjt.dphi
ATLAS_2022_I2037744 13000 0.87 -0.63 0.24
ej.pt
ATLAS_2022_I2037744 13000 2.1* +0.20 2.3*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 5.0 -2.4 2.6
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 3.2 -0.40 2.8
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.1 -0.70 2.4
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.5 -0.70 1.8
ejej.dphi
ATLAS_2022_I2037744 13000 2.0 -1.0 0.96
ejets.ht
CMS_2021_I1901295 13000 11 +2.0 13
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.3 +1.5 4.8
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.8 -0.60 2.2
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.19 -0.10 0.088
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.062 -0.042 0.020
Jet mass
Jet mass
CMS_2017_I1518399 8000 4.4 -1.5 2.9
CMS_2019_I1764472 13000 0.84 +0.050 0.89
Jet pT
ATLAS_2014_I1304688 7000 7.4 -0.30 7.1
ATLAS_2019_I1718132 13000 4.8* -0.100 4.7*
Dijet
Δη
ATLAS_2019_I1718132 13000 6.0 +0.50 6.5
Dijet
Δφ
ATLAS_2019_I1718132 13000 6.8 +0.20 7.0
Dijet
HT
ATLAS_2019_I1718132 13000 n/a - 4.1
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 8.8 -0.80 8.0
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 2.3 +0.10 2.4
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.34 +0.0100 0.35
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 2.1 -0.10 2.0
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.6 -0.30 1.3
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.2 -0.20 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 3.4 -0.70 2.7
Lepton η
ATLAS_2019_I1759875 13000 13 +1.0 14
CMS_2018_I1703993 13000 14 -2.0 12
Lepton pT
ATLAS_2019_I1759875 13000 18 +2.0 20
CMS_2018_I1703993 13000 26 -3.0 23
CMS_2021_I1901295 13000 6.8 +0.20 7.0
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 5.7 -0.80 4.9
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.75 -0.11 0.64
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.7 -1.0 5.7
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 10* -1.9 8.1
Dilepton
E
ATLAS_2019_I1759875 13000 16 0 16
Dilepton
Δη
CMS_2016_I1430892 8000 0.41 +0.14 0.55
CMS_2018_I1703993 13000 18 -1.0 17
Dilepton
Δφ
ATLAS_2019_I1718132 13000 8.0 +0.40 8.4
ATLAS_2019_I1759875 13000 12* -1.0 11
CMS_2018_I1703993 13000 27 -5.0 22
Dilepton
HT
ATLAS_2019_I1759875 13000 14 +2.0 16
Dilepton
m
ATLAS_2019_I1759875 13000 15 0 15
CMS_2018_I1703993 13000 30 -9.0 21
Dilepton
pT
ATLAS_2019_I1718132 13000 9.1 -2.5 6.6
ATLAS_2019_I1759875 13000 14 +3.0 17
CMS_2018_I1703993 13000 21 -3.0 18
Dilepton
y
ATLAS_2019_I1759875 13000 13* -1.0 12
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 1.3 +1.3 2.6
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 18 -3.0 15
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 3.9 +0.50 4.4
CMS_2018_I1703993 13000 20 -3.0 17
sumpt
ATLAS_2022_I2152933 13000 2.9 +2.0 4.9
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.1 +0.20 4.3
ATLAS_2020_I1801434 13000 3.3 -0.30 3.0
ATLAS_2022_I2077575 13000 2.9 -0.80 2.1
Top pT
ATLAS_2019_I1750330 13000 3.4 +0.50 3.9*
ATLAS_2020_I1801434 13000 3.0 -0.50 2.5
ATLAS_2022_I2037744 13000 1.9 -0.60 1.3
ATLAS_2022_I2077575 13000 2.1* 0 2.1*
CMS_2018_I1703993 13000 32 -1.0 31
CMS_2021_I1901295 13000 13* 0 13*
top.pt.ttbarRF
CMS_2018_I1703993 13000 30 0 30
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 3.8 -0.50 3.3
Top rapidity
ATLAS_2019_I1750330 13000 4.3 -0.20 4.1
ATLAS_2020_I1801434 13000 3.6 -0.40 3.2
ATLAS_2022_I2037744 13000 1.4 -0.40 1.0
ATLAS_2022_I2077575 13000 2.8* -0.100 2.7*
CMS_2018_I1703993 13000 26 0 26
CMS_2021_I1901295 13000 11 +1.0 12
topej.dphi
ATLAS_2022_I2037744 13000 2.3 +0.10 2.4
topej.m
ATLAS_2022_I2037744 13000 2.9 -2.3 0.61
χ(ttbar)
ATLAS_2019_I1750330 13000 4.4 +0.50 4.9
ATLAS_2020_I1801434 13000 5.1 -2.3 2.8
ATLAS_2022_I2077575 13000 4.4* -0.50 3.9*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 4.7 +0.20 4.9
ATLAS_2020_I1801434 13000 3.2 +0.20 3.4
ATLAS_2022_I2037744 13000 n/a - 1.1
ATLAS_2022_I2077575 13000 4.2 -1.8 2.4
CMS_2018_I1703993 13000 45 -3.0 42
CMS_2021_I1901295 13000 18 +3.0 21
Δy (ttbar)
CMS_2016_I1430892 8000 0.11 +0.16 0.27
CMS_2018_I1703993 13000 27 -2.0 25
CMS_2021_I1901295 13000 11 +2.0 13
ttbar HT
ATLAS_2019_I1750330 13000 3.4 +0.10 3.5
ATLAS_2020_I1801434 13000 3.7 -0.80 2.9
ATLAS_2022_I2037744 13000 n/a - 1.8
ATLAS_2022_I2077575 13000 5.3* -1.3 4.0*
CMS_2021_I1901295 13000 11 0 11
m(ttbar)
ATLAS_2019_I1750330 13000 3.2 -0.10 3.1*
ATLAS_2020_I1801434 13000 3.6 -0.70 2.9
ATLAS_2022_I2037744 13000 1.1 0 1.1
ATLAS_2022_I2077575 13000 2.3* -0.100 2.2*
CMS_2018_I1703993 13000 28 -2.0 26
CMS_2021_I1901295 13000 16 +1.0 17
Pcrossttbar
ATLAS_2020_I1801434 13000 2.8 -0.100 2.7
ttbar pT
ATLAS_2019_I1750330 13000 4.6 0 4.6*
ATLAS_2020_I1801434 13000 3.2 -0.60 2.6
ATLAS_2022_I2037744 13000 3.4 -0.50 2.9
ATLAS_2022_I2077575 13000 2.8* -0.70 2.1*
CMS_2018_I1703993 13000 27 -3.0 24
CMS_2021_I1901295 13000 11* +2.0 13
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.8 -1.3 2.5
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.7 0 2.7
CMS_2021_I1901295 13000 17 +1.0 18
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.0 0 4.0
ATLAS_2020_I1801434 13000 3.6* -0.60 3.0
ATLAS_2022_I2037744 13000 0.62 +1.4 2.0
ATLAS_2022_I2077575 13000 3.0 +1.6 4.6*
CMS_2018_I1703993 13000 26 0 26
CMS_2021_I1901295 13000 15 +1.0 16
Mean rapidity
ATLAS_2019_I1750330 13000 6.0 0 6.0
ATLAS_2020_I1801434 13000 3.4 -0.50 2.9
ATLAS_2022_I2077575 13000 4.9* -0.60 4.3*
ttbarej.ht
ATLAS_2022_I2037744 13000 1.1 -0.31 0.79
ttbarej.m
CMS_2021_I1901295 13000 13 +1.0 14
pT ratio
W to b
ATLAS_2020_I1801434 13000 4.4 -1.8 2.6
pT ratio
W to top
ATLAS_2020_I1801434 13000 3.8 -0.90 2.9
Cross sections
ATLAS_2022_I2037744 13000 0.85 -0.64 0.21
ATLAS_2022_I2077575 13000 19 -4.0 15
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.