Generator

Details for Pythia 6.427 default vs. 345

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (345)
Asymmetry
 AC vs Mttbar
 CMS_2016_I1430892 8000 0.23 +0.060 0.29
Asymmetry
 AC vs pTttbar
 CMS_2016_I1430892 8000 1.2 +5.6 6.8
Asymmetry
 AC vs yttbar
 CMS_2016_I1430892 8000 1.2 +1.5 2.7
Asymmetry
 ACl vs Mttbar
 CMS_2016_I1430892 8000 0.76 +0.74 1.5
Asymmetry
 ACl vs pTttbar
 CMS_2016_I1430892 8000 0.25 +0.37 0.62
Asymmetry
 ACl vs yttbar
 CMS_2016_I1430892 8000 0.23 +0.27 0.50
Asymmetry
 Energy asymmetry
 ATLAS_2021_I1941095 13000 - 0.71
B jet
 η
 CMS_2018_I1703993 13000 - 33
B jet
 pT
 CMS_2018_I1703993 13000 - 39
bjbj.m
 CMS_2018_I1703993 13000 - 46
bjbj.pt
 CMS_2018_I1703993 13000 - 40
bjt.dphi
 ATLAS_2022_I2037744 13000 - 1.9
ej.pt
 ATLAS_2022_I2037744 13000 - 2.3
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 - 1.7
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 - 2.8
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 - 3.2
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 - 1.7
ejej.dphi
 ATLAS_2022_I2037744 13000 - 0.92
ejets.ht
 CMS_2021_I1901295 13000 - 13
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 - 2.6
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 - 2.3
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.17 -0.12 0.046
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.096 -0.076 0.020
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 74 -72 2.5
CMS_2019_I1764472 13000 - 1.3
Jet pT
 ATLAS_2014_I1304688 7000 28 -11 17
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 1.2 +0.70 1.9
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.24 +0.030 0.27
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.4 +0.20 1.6
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 0.80 +0.30 1.1
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 1.1 +0.70 1.8
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 1.5 +1.6 3.1
Lepton η
 ATLAS_2019_I1759875 13000 - 24
CMS_2018_I1703993 13000 - 20
Lepton pT
 ATLAS_2019_I1759875 13000 - 33
CMS_2018_I1703993 13000 - 37
CMS_2021_I1901295 13000 - 9.1
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 4.1 -1.7 2.4
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.40 +0.020 0.42
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 5.1 -2.0 3.1
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 - 27
Dilepton
 Δη
 CMS_2016_I1430892 8000 0.23 +0.68 0.91
CMS_2018_I1703993 13000 - 27
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 - 19
CMS_2018_I1703993 13000 - 35
Dilepton
 HT
 ATLAS_2019_I1759875 13000 - 27
Dilepton
 m
 ATLAS_2019_I1759875 13000 - 25
CMS_2018_I1703993 13000 - 34
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 - 28
CMS_2018_I1703993 13000 - 31
Dilepton
 y
 ATLAS_2019_I1759875 13000 - 19
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 - 1.2
Jet Multiplicities
 Extra jets multiplicity
 ATLAS_2019_I1750330 13000 - n/a
ATLAS_2022_I2037744 13000 - n/a
CMS_2021_I1901295 13000 - 15
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 - 5.8
CMS_2018_I1703993 13000 - 31
sumpt
 ATLAS_2022_I2152933 13000 - 3.3
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 - n/a
Pouttop
 ATLAS_2019_I1750330 13000 - 5.9
ATLAS_2020_I1801434 13000 - 3.4
ATLAS_2022_I2077575 13000 - 2.2*
Top pT
 ATLAS_2019_I1750330 13000 - 5.2*
ATLAS_2020_I1801434 13000 - 3.6
ATLAS_2022_I2037744 13000 - 3.0
ATLAS_2022_I2077575 13000 - 1.5*
CMS_2018_I1703993 13000 - 51
CMS_2021_I1901295 13000 - 15*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 - 50
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 - 4.2
Top rapidity
 ATLAS_2019_I1750330 13000 - 6.0
ATLAS_2020_I1801434 13000 - 4.1
ATLAS_2022_I2037744 13000 - 1.7
ATLAS_2022_I2077575 13000 - 1.7*
CMS_2018_I1703993 13000 - 46
CMS_2021_I1901295 13000 - 16
topej.dphi
 ATLAS_2022_I2037744 13000 - 2.3
topej.m
 ATLAS_2022_I2037744 13000 - 0.69
χ(ttbar)
 ATLAS_2019_I1750330 13000 - 6.4
ATLAS_2020_I1801434 13000 - 4.9
ATLAS_2022_I2077575 13000 - 2.1*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 - 7.1
ATLAS_2020_I1801434 13000 - 5.7
ATLAS_2022_I2037744 13000 - 1.8
ATLAS_2022_I2077575 13000 - 3.2*
CMS_2018_I1703993 13000 - 71
CMS_2021_I1901295 13000 - 25
Δy (ttbar)
 CMS_2016_I1430892 8000 0.37 +0.63 1.0
CMS_2018_I1703993 13000 - 51
CMS_2021_I1901295 13000 - 16
ttbar HT
 ATLAS_2019_I1750330 13000 - 4.7
ATLAS_2020_I1801434 13000 - 2.8
ATLAS_2022_I2037744 13000 - 1.7
ATLAS_2022_I2077575 13000 - 2.3*
CMS_2021_I1901295 13000 - 16
m(ttbar)
 ATLAS_2019_I1750330 13000 - 4.3
ATLAS_2020_I1801434 13000 - 2.9
ATLAS_2022_I2037744 13000 - 1.9
ATLAS_2022_I2077575 13000 - 1.6*
CMS_2018_I1703993 13000 - 60
CMS_2021_I1901295 13000 - 21
Pcrossttbar
 ATLAS_2020_I1801434 13000 - 3.9
ttbar pT
 ATLAS_2019_I1750330 13000 - 6.0
ATLAS_2020_I1801434 13000 - 3.6
ATLAS_2022_I2037744 13000 - 0.93
ATLAS_2022_I2077575 13000 - 2.3*
CMS_2018_I1703993 13000 - 48
CMS_2021_I1901295 13000 - 15
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 - 3.1
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 - 2.2*
CMS_2021_I1901295 13000 - 22
Ttbar rapidity
 ATLAS_2019_I1750330 13000 - 5.5
ATLAS_2020_I1801434 13000 - 2.6
ATLAS_2022_I2037744 13000 - 0.90
ATLAS_2022_I2077575 13000 - 1.6
CMS_2018_I1703993 13000 - 42
CMS_2021_I1901295 13000 - 19
Mean rapidity
 ATLAS_2019_I1750330 13000 - 7.7
ATLAS_2020_I1801434 13000 - 3.3
ATLAS_2022_I2077575 13000 - 1.9
ttbarej.ht
 ATLAS_2022_I2037744 13000 - 1.5
ttbarej.m
 CMS_2021_I1901295 13000 - 17
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 - 4.0
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 - 3.9
Cross sections
 ATLAS_2022_I2037744 13000 - 4.8
ATLAS_2022_I2077575 13000 - 7.8
CMS_2019_I1753720 13000 - 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 1199 histograms.