Generator

Details for Pythia 8.201 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 3.2 -2.8 0.42
B jet
 η
 CMS_2018_I1703993 13000 18 0 18
B jet
 pT
 CMS_2018_I1703993 13000 23 +4.0 27
bjbj.m
 CMS_2018_I1703993 13000 24 +2.0 26
bjbj.pt
 CMS_2018_I1703993 13000 31 +3.0 34
bjt.dphi
 ATLAS_2022_I2037744 13000 7.4 -0.30 7.1
ej.pt
 ATLAS_2022_I2037744 13000 8.9 0 8.9
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 1.1 +0.100 1.2
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 2.7 -0.80 1.9
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 3.9 -1.8 2.1
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 0.66 -0.030 0.63
ejej.dphi
 ATLAS_2022_I2037744 13000 6.3 +0.70 7.0
ejets.ht
 CMS_2021_I1901295 13000 26 +4.0 30
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 3.4 -0.90 2.5
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 1.1 +0.20 1.3
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 2.8 +0.70 3.5
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 2.2 +0.30 2.5
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.96 +0.14 1.1
Jet pT
 ATLAS_2014_I1304688 7000 7.7 +0.100 7.8
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 2.7 +0.20 2.9
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.37 +0.010 0.38
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 3.7 +0.20 3.9
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 2.5 +0.60 3.1
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 3.7 +0.40 4.1
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 5.2 +0.20 5.4
Lepton η
 ATLAS_2019_I1759875 13000 13 +1.0 14
CMS_2018_I1703993 13000 11 0 11
Lepton pT
 ATLAS_2019_I1759875 13000 18 +2.0 20
CMS_2018_I1703993 13000 21 +4.0 25
CMS_2021_I1901295 13000 6.4 +0.30 6.7
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 6.2 +0.40 6.6
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.95 +0.15 1.1
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 8.7 +0.60 9.3
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 15 +1.0 16
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 14 +1.0 15
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 8.8 +0.60 9.4
CMS_2018_I1703993 13000 15 +2.0 17
Dilepton
 HT
 ATLAS_2019_I1759875 13000 16 +2.0 18
Dilepton
 m
 ATLAS_2019_I1759875 13000 15 -1.0 14
CMS_2018_I1703993 13000 18 +3.0 21
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 18 0 18
CMS_2018_I1703993 13000 19 +2.0 21
Dilepton
 y
 ATLAS_2019_I1759875 13000 10 +3.0 13*
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 2.9 -0.20 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 19 0 19
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.6 -1.4 3.2
CMS_2018_I1703993 13000 32 +1.0 33
sumpt
 ATLAS_2022_I2152933 13000 3.6 +0.10 3.7
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 16 +1.0 17
ATLAS_2020_I1801434 13000 5.4 -2.4 3.0
ATLAS_2022_I2077575 13000 6.7 +0.80 7.5
Top pT
 ATLAS_2019_I1750330 13000 9.4 -0.30 9.1
ATLAS_2020_I1801434 13000 2.5 -0.40 2.1
ATLAS_2022_I2037744 13000 8.3 -0.10 8.2
ATLAS_2022_I2077575 13000 3.4* +0.30 3.7*
CMS_2018_I1703993 13000 41 +3.0 44
CMS_2021_I1901295 13000 18 0 18
top.pt.ttbarRF
 CMS_2018_I1703993 13000 28 +2.0 30
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 3.3 -1.5 1.8
Top rapidity
 ATLAS_2019_I1750330 13000 5.8 +0.20 6.0
ATLAS_2020_I1801434 13000 0.69 +0.81 1.5
ATLAS_2022_I2037744 13000 3.4 +0.70 4.1
ATLAS_2022_I2077575 13000 4.2* +0.60 4.8*
CMS_2018_I1703993 13000 25 -2.0 23
CMS_2021_I1901295 13000 10 -0.100 9.9*
topej.dphi
 ATLAS_2022_I2037744 13000 8.5 -0.40 8.1
topej.m
 ATLAS_2022_I2037744 13000 11 -1.7 9.3
χ(ttbar)
 ATLAS_2019_I1750330 13000 6.0 +0.20 6.2
ATLAS_2020_I1801434 13000 1.2 -0.52 0.68
ATLAS_2022_I2077575 13000 4.4 +0.50 4.9
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 9.1 +0.50 9.6
ATLAS_2020_I1801434 13000 6.3 -2.1 4.2
ATLAS_2022_I2037744 13000 18 +1.0 19
ATLAS_2022_I2077575 13000 8.3 +0.60 8.9
CMS_2018_I1703993 13000 71 -7.0 64
CMS_2021_I1901295 13000 21 -1.0 20
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 28 -3.0 25
CMS_2021_I1901295 13000 8.7 -1.7 7.0
ttbar HT
 ATLAS_2019_I1750330 13000 10 +1.0 11
ATLAS_2020_I1801434 13000 2.0 -1.4 0.60
ATLAS_2022_I2037744 13000 6.2 +0.100 6.3
ATLAS_2022_I2077575 13000 4.3 +0.90 5.2
CMS_2021_I1901295 13000 16 -2.0 14
m(ttbar)
 ATLAS_2019_I1750330 13000 6.3 -0.40 5.9
ATLAS_2020_I1801434 13000 1.7 -0.100 1.6
ATLAS_2022_I2037744 13000 6.3 -0.100 6.2
ATLAS_2022_I2077575 13000 2.1* +0.30 2.4*
CMS_2018_I1703993 13000 25 0 25
CMS_2021_I1901295 13000 15 -3.0 12
Pcrossttbar
 ATLAS_2020_I1801434 13000 2.8 -0.40 2.4
ttbar pT
 ATLAS_2019_I1750330 13000 16 0 16
ATLAS_2020_I1801434 13000 4.4 -0.90 3.5
ATLAS_2022_I2037744 13000 16 0 16
ATLAS_2022_I2077575 13000 4.2* -0.10 4.1
CMS_2018_I1703993 13000 63 +2.0 65
CMS_2021_I1901295 13000 22 +1.0 23
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 2.2 -1.3 0.92
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 5.2 +0.60 5.8
CMS_2021_I1901295 13000 13 -1.0 12
Ttbar rapidity
 ATLAS_2019_I1750330 13000 5.8 -0.50 5.3
ATLAS_2020_I1801434 13000 1.2 -0.100 1.1
ATLAS_2022_I2037744 13000 5.0 +0.20 5.2
ATLAS_2022_I2077575 13000 7.8* -2.6 5.2
CMS_2018_I1703993 13000 24 -1.0 23
CMS_2021_I1901295 13000 11 -2.0 9.0
Mean rapidity
 ATLAS_2019_I1750330 13000 4.2 -0.70 3.5
ATLAS_2020_I1801434 13000 0.66 +1.1 1.8
ATLAS_2022_I2077575 13000 7.8* -2.6 5.2
ttbarej.ht
 ATLAS_2022_I2037744 13000 17 +1.0 18
ttbarej.m
 CMS_2021_I1901295 13000 18 +3.0 21
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 1.2 -0.32 0.88
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 1.4 -0.43 0.97
Cross sections
 ATLAS_2022_I2037744 13000 44 +5.0 49
ATLAS_2022_I2077575 13000 32 +9.0 41
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.