Generator

Details for Pythia 6.425 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 - 2.0
Asymmetry
 AC vs pTttbar
 CMS_2016_I1430892 8000 n/a - 5.3
Asymmetry
 AC vs yttbar
 CMS_2016_I1430892 8000 n/a - 0.56
Asymmetry
 ACl vs Mttbar
 CMS_2016_I1430892 8000 n/a - 2.8
Asymmetry
 ACl vs pTttbar
 CMS_2016_I1430892 8000 n/a - 2.2
Asymmetry
 ACl vs yttbar
 CMS_2016_I1430892 8000 n/a - 0.92
Asymmetry
 Energy asymmetry
 ATLAS_2021_I1941095 13000 n/a - 0.19
B jet
 η
 CMS_2018_I1703993 13000 130 -84 46
B jet
 pT
 CMS_2018_I1703993 13000 170 -110 56
bjbj.m
 CMS_2018_I1703993 13000 200 -130 71
bjbj.pt
 CMS_2018_I1703993 13000 170 -110 59
bjt.dphi
 ATLAS_2022_I2037744 13000 1.5 +1.6 3.1
ej.pt
 ATLAS_2022_I2037744 13000 3.3 -0.50 2.8*
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 8.2 -5.3 2.9
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 7.7 -4.2 3.5
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 7.1 -3.7 3.4
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 6.0 -2.9 3.1
ejej.dphi
 ATLAS_2022_I2037744 13000 2.5 -0.70 1.8
ejets.ht
 CMS_2021_I1901295 13000 30 -11 19
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 7.0 -3.6 3.4
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 7.5 -4.6 2.9
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.11 +0.22 0.33
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.076 +0.084 0.16
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - 1.8
CMS_2019_I1764472 13000 2.6 -1.4 1.2
Jet pT
 ATLAS_2014_I1304688 7000 29 -13 16
ATLAS_2019_I1718132 13000 n/a - 8.9*
Dijet
 Δη
 ATLAS_2019_I1718132 13000 n/a - 11
Dijet
 Δφ
 ATLAS_2019_I1718132 13000 n/a - 13
Dijet
 HT
 ATLAS_2019_I1718132 13000 n/a - 7.5
Jet mass
 Dijet mass
 ATLAS_2019_I1718132 13000 n/a - 15
Jet Shapes
 Differential Jet Shape
 ATLAS_2013_I1243871 7000 1.0 +1.4 2.4
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.21 +0.23 0.44
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.5 -0.20 1.3
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 0.77 +0.11 0.88
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 1.3 +0.20 1.5
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 1.6 +0.90 2.5
Lepton η
 ATLAS_2019_I1759875 13000 41 -1.0 40
CMS_2018_I1703993 13000 79 -50 29
Lepton pT
 ATLAS_2019_I1759875 13000 55 -2.0 53
CMS_2018_I1703993 13000 160 -110 53
CMS_2021_I1901295 13000 20 -6.0 14
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 4.4 +1.9 6.3
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.41 +0.69 1.1
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 5.1 +2.4 7.5
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - 18*
Dilepton
 E
 ATLAS_2019_I1759875 13000 47 -3.0 44
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - 0.55
CMS_2018_I1703993 13000 110 -71 39
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - 11
ATLAS_2019_I1759875 13000 32* -5.0 27
CMS_2018_I1703993 13000 130 -83 47
Dilepton
 HT
 ATLAS_2019_I1759875 13000 47 -4.0 43
Dilepton
 m
 ATLAS_2019_I1759875 13000 46 -5.0 41
CMS_2018_I1703993 13000 130 -82 48
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - 9.9
ATLAS_2019_I1759875 13000 47 -5.0 42
CMS_2018_I1703993 13000 130 -85 45
Dilepton
 y
 ATLAS_2019_I1759875 13000 37* -6.0 31
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 17 -15 2.5
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 43 -22 21
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 9.8 +0.20 10.0
CMS_2018_I1703993 13000 150 -110 42
sumpt
 ATLAS_2022_I2152933 13000 27 -25 2.0
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 9.8 -1.9 7.9
ATLAS_2020_I1801434 13000 6.9 -0.30 6.6*
ATLAS_2022_I2077575 13000 2.1* +0.20 2.3*
Top pT
 ATLAS_2019_I1750330 13000 7.7* -0.60 7.1
ATLAS_2020_I1801434 13000 6.3 -0.50 5.8*
ATLAS_2022_I2037744 13000 2.0 +0.90 2.9
ATLAS_2022_I2077575 13000 1.5* +0.40 1.9*
CMS_2018_I1703993 13000 170 -99 71
CMS_2021_I1901295 13000 36* -13 23*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 170 -100 68
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 8.7 -2.7 6.0
Top rapidity
 ATLAS_2019_I1750330 13000 9.1 -1.3 7.8
ATLAS_2020_I1801434 13000 8.4 -1.7 6.7
ATLAS_2022_I2037744 13000 1.7 +0.70 2.4
ATLAS_2022_I2077575 13000 1.5* +0.20 1.7*
CMS_2018_I1703993 13000 150 -85 65
CMS_2021_I1901295 13000 34* -11 23
topej.dphi
 ATLAS_2022_I2037744 13000 3.3 -0.70 2.6
topej.m
 ATLAS_2022_I2037744 13000 3.2 -0.50 2.7
χ(ttbar)
 ATLAS_2019_I1750330 13000 11 -1.8 9.2
ATLAS_2020_I1801434 13000 8.3 -2.6 5.7
ATLAS_2022_I2077575 13000 2.4* -0.60 1.8
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 9.3 -1.5 7.8
ATLAS_2020_I1801434 13000 8.2 +1.0 9.2*
ATLAS_2022_I2037744 13000 2.9 +1.5 4.4
ATLAS_2022_I2077575 13000 2.1 +0.80 2.9*
CMS_2018_I1703993 13000 320 -220 100
CMS_2021_I1901295 13000 49 -16 33
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - 0.88
CMS_2018_I1703993 13000 160 -89 71
CMS_2021_I1901295 13000 35 -11 24
ttbar HT
 ATLAS_2019_I1750330 13000 7.5 -1.0 6.5
ATLAS_2020_I1801434 13000 7.0 -2.4 4.6
ATLAS_2022_I2037744 13000 1.4 +0.90 2.3
ATLAS_2022_I2077575 13000 1.2 +1.0 2.2*
CMS_2021_I1901295 13000 30 -7.0 23
m(ttbar)
 ATLAS_2019_I1750330 13000 6.9* -0.70 6.2
ATLAS_2020_I1801434 13000 8.3 -2.1 6.2
ATLAS_2022_I2037744 13000 2.2 - n/a
ATLAS_2022_I2077575 13000 1.2* +0.50 1.7*
CMS_2018_I1703993 13000 170 -91 79
CMS_2021_I1901295 13000 48 -18 30
Pcrossttbar
 ATLAS_2020_I1801434 13000 8.0 -0.60 7.4
ttbar pT
 ATLAS_2019_I1750330 13000 8.9 -1.4 7.5
ATLAS_2020_I1801434 13000 6.6 -0.40 6.2*
ATLAS_2022_I2037744 13000 3.2 +0.20 3.4
ATLAS_2022_I2077575 13000 1.5* +0.30 1.8*
CMS_2018_I1703993 13000 210 -140 66
CMS_2021_I1901295 13000 30 -10 20
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 8.0 -2.2 5.8
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 2.9* -0.10 2.8
CMS_2021_I1901295 13000 48 -16 32
Ttbar rapidity
 ATLAS_2019_I1750330 13000 8.5 -1.1 7.4
ATLAS_2020_I1801434 13000 5.0* -0.60 4.4
ATLAS_2022_I2037744 13000 1.5 +0.30 1.8
ATLAS_2022_I2077575 13000 2.2 +0.50 2.7
CMS_2018_I1703993 13000 140 -80 60
CMS_2021_I1901295 13000 43 -14 29
Mean rapidity
 ATLAS_2019_I1750330 13000 12 -2.0 10
ATLAS_2020_I1801434 13000 6.7 -1.6 5.1
ATLAS_2022_I2077575 13000 2.5 -0.80 1.7
ttbarej.ht
 ATLAS_2022_I2037744 13000 5.6 +0.20 5.8
ttbarej.m
 CMS_2021_I1901295 13000 38 -15 23
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 7.6 -2.0 5.6
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 7.5 -1.5 6.0
Cross sections
 ATLAS_2022_I2037744 13000 5.5 +8.5 14
ATLAS_2022_I2077575 13000 6.7 +1.5 8.2
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.