Generator

Details for Pythia 6.426 default vs. 350

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (350)
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 n/a - 1.4
B jet
η
CMS_2018_I1703993 13000 150 -100 47
B jet
pT
CMS_2018_I1703993 13000 190 -130 56
bjbj.m
CMS_2018_I1703993 13000 230 -170 65
bjbj.pt
CMS_2018_I1703993 13000 200 -140 58
bjt.dphi
ATLAS_2022_I2037744 13000 2.3 -1.2 1.1
ej.pt
ATLAS_2022_I2037744 13000 3.3 -0.50 2.8*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 7.8 -5.7 2.1
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 7.1 -4.3 2.8
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 7.6 -4.3 3.3
ΔR(extra jets)
ATLAS_2020_I1801434 13000 5.9 -2.8 3.1*
ejej.dphi
ATLAS_2022_I2037744 13000 3.1 -2.6 0.47
ejets.ht
CMS_2021_I1901295 13000 31 -17 14
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 7.5 -4.2 3.3
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 6.1 -3.5 2.6
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.11 +0.040 0.15
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.075 -0.026 0.049
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 n/a - 0.57
Jet pT
ATLAS_2014_I1304688 7000 29 -13 16
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 1.0 +1.6 2.6
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.21 +0.21 0.42
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.5 +0.30 1.8
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 0.77 +0.18 0.95
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.3 +0.60 1.9
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 1.7 +1.4 3.1
Lepton η
ATLAS_2019_I1759875 13000 41 -5.0 36
CMS_2018_I1703993 13000 90 -62 28
Lepton pT
ATLAS_2019_I1759875 13000 55 -7.0 48
CMS_2018_I1703993 13000 190 -140 53
CMS_2021_I1901295 13000 19 -7.0 12
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.4 +1.7 6.1
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.41 +0.69 1.1
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 5.1 +2.6 7.7
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 48 -6.0 42
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 130 -89 41
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 33* -9.0 24
CMS_2018_I1703993 13000 140 -92 48
Dilepton
HT
ATLAS_2019_I1759875 13000 46 -7.0 39
Dilepton
m
ATLAS_2019_I1759875 13000 44 -6.0 38
CMS_2018_I1703993 13000 150 -100 49
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 47 -8.0 39
CMS_2018_I1703993 13000 150 -100 46
Dilepton
y
ATLAS_2019_I1759875 13000 33 -4.0 29
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 17 -17 0.44
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 45 -26 19
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 11 -3.7 7.3
CMS_2018_I1703993 13000 170 -130 43
sumpt
ATLAS_2022_I2152933 13000 19 -18 1.3
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 9.4 -1.8 7.6
ATLAS_2020_I1801434 13000 7.7 -2.5 5.2
ATLAS_2022_I2077575 13000 1.2 +1.4 2.6*
Top pT
ATLAS_2019_I1750330 13000 7.7 -2.0 5.7
ATLAS_2020_I1801434 13000 7.4 -3.1 4.3
ATLAS_2022_I2037744 13000 2.4 -0.30 2.1
ATLAS_2022_I2077575 13000 1.5* +0.20 1.7*
CMS_2018_I1703993 13000 180 -110 75
CMS_2021_I1901295 13000 36 -16 20*
top.pt.ttbarRF
CMS_2018_I1703993 13000 180 -110 73
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 11 -5.7 5.3
Top rapidity
ATLAS_2019_I1750330 13000 8.8 -1.5 7.3
ATLAS_2020_I1801434 13000 9.1 -3.9 5.2
ATLAS_2022_I2037744 13000 2.3 -0.40 1.9
ATLAS_2022_I2077575 13000 1.6* +0.40 2.0*
CMS_2018_I1703993 13000 160 -91 69
CMS_2021_I1901295 13000 33 -11 22
topej.dphi
ATLAS_2022_I2037744 13000 3.7 -1.2 2.5
topej.m
ATLAS_2022_I2037744 13000 2.2 -0.60 1.6
χ(ttbar)
ATLAS_2019_I1750330 13000 11 -2.8 8.2
ATLAS_2020_I1801434 13000 9.1 -4.0 5.1
ATLAS_2022_I2077575 13000 3.1* 0 3.1*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 8.9 -1.5 7.4
ATLAS_2020_I1801434 13000 8.7 -2.2 6.5
ATLAS_2022_I2037744 13000 2.3 +0.30 2.6
ATLAS_2022_I2077575 13000 1.5 +1.4 2.9
CMS_2018_I1703993 13000 290 -190 100
CMS_2021_I1901295 13000 49 -18 31
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 170 -94 76
CMS_2021_I1901295 13000 38 -17 21
ttbar HT
ATLAS_2019_I1750330 13000 7.1 -1.2 5.9
ATLAS_2020_I1801434 13000 8.3 -3.9 4.4
ATLAS_2022_I2037744 13000 1.7 +2.2 3.9
ATLAS_2022_I2077575 13000 1.5 +1.4 2.9*
CMS_2021_I1901295 13000 32 -11 21
m(ttbar)
ATLAS_2019_I1750330 13000 6.0* -0.90 5.1*
ATLAS_2020_I1801434 13000 8.6 -3.8 4.8
ATLAS_2022_I2037744 13000 1.7 - n/a
ATLAS_2022_I2077575 13000 1.1* +0.50 1.6*
CMS_2018_I1703993 13000 170 -86 84
CMS_2021_I1901295 13000 49 -23 26*
Pcrossttbar
ATLAS_2020_I1801434 13000 7.9 -3.0 4.9
ttbar pT
ATLAS_2019_I1750330 13000 8.7 -1.8 6.9
ATLAS_2020_I1801434 13000 7.8* -2.8 5.0
ATLAS_2022_I2037744 13000 2.6 -1.4 1.2
ATLAS_2022_I2077575 13000 1.2 +0.70 1.9*
CMS_2018_I1703993 13000 200 -140 63
CMS_2021_I1901295 13000 31 -12 19
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 7.0 -1.7 5.3
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.9 -0.50 2.4
CMS_2021_I1901295 13000 49 -21 28
Ttbar rapidity
ATLAS_2019_I1750330 13000 8.4 -1.6 6.8
ATLAS_2020_I1801434 13000 5.9 -1.9 4.0
ATLAS_2022_I2037744 13000 2.0 -0.50 1.5
ATLAS_2022_I2077575 13000 2.0* +0.70 2.7*
CMS_2018_I1703993 13000 140 -78 62
CMS_2021_I1901295 13000 44 -19 25
Mean rapidity
ATLAS_2019_I1750330 13000 12 -2.1 9.9
ATLAS_2020_I1801434 13000 6.5 -2.8 3.7
ATLAS_2022_I2077575 13000 1.8* +1.1 2.9*
ttbarej.ht
ATLAS_2022_I2037744 13000 3.5 -0.50 3.0
ttbarej.m
CMS_2021_I1901295 13000 37 -18 19
pT ratio
W to b
ATLAS_2020_I1801434 13000 8.7 -4.1 4.6
pT ratio
W to top
ATLAS_2020_I1801434 13000 8.1 -3.5 4.6
Cross sections
ATLAS_2022_I2037744 13000 8.6 -0.90 7.7
ATLAS_2022_I2077575 13000 6.0 +3.9 9.9
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.