Generator / tune

Details for Pythia 6.427 362 vs. 6.428

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (6.427) Δ χ2+5% (6.428)
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 0.13 - n/a
B jet
η
CMS_2018_I1703993 13000 60 +2.0 62
B jet
pT
CMS_2018_I1703993 13000 71 +1.0 72
bjbj.m
CMS_2018_I1703993 13000 87 +3.0 90
bjbj.pt
CMS_2018_I1703993 13000 81 -4.0 77
bjt.dphi
ATLAS_2022_I2037744 13000 2.3 +0.40 2.7
ej.pt
ATLAS_2022_I2037744 13000 2.8* -0.40 2.4
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 3.2 +1.6 4.8
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 3.9 +1.5 5.4
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.4 +1.4 4.8
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.5 +1.7 4.2
ejej.dphi
ATLAS_2022_I2037744 13000 0.52 +0.58 1.1
ejets.ht
CMS_2021_I1901295 13000 19 -3.0 16
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.9 +0.60 4.5
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 3.2 +0.90 4.1
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.34 +0.030 0.37
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.17 +0.0100 0.18
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.5 0 1.5
Jet pT
ATLAS_2014_I1304688 7000 18 0 18
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 1.7 0 1.7
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.24 -0.0100 0.23
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.9 +0.10 2.0
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.00 +0.10 1.1
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.6 +0.50 2.1
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.5 +0.90 3.4
Lepton η
ATLAS_2019_I1759875 13000 42 -3.0 39
CMS_2018_I1703993 13000 36 +1.0 37
Lepton pT
ATLAS_2019_I1759875 13000 55 -1.0 54
CMS_2018_I1703993 13000 70 0 70
CMS_2021_I1901295 13000 15 -1.0 14
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 2.1 +0.10 2.2
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.40 -0.090 0.31
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 3.8 -0.70 3.1
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 47 -3.0 44
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 52 0 52
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 32 -4.0 28
CMS_2018_I1703993 13000 65 -5.0 60
Dilepton
HT
ATLAS_2019_I1759875 13000 45 -1.0 44
Dilepton
m
ATLAS_2019_I1759875 13000 44 -4.0 40
CMS_2018_I1703993 13000 70 -8.0 62
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 46 +1.0 47
CMS_2018_I1703993 13000 60 0 60
Dilepton
y
ATLAS_2019_I1759875 13000 33 -2.0 31
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 4.7 -1.1 3.6
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 24 -2.0 22
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 9.3 +0.20 9.5
CMS_2018_I1703993 13000 53 +4.0 57
sumpt
ATLAS_2022_I2152933 13000 6.4 -3.0 3.4
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 8.1 0 8.1
ATLAS_2020_I1801434 13000 6.7 -0.40 6.3*
ATLAS_2022_I2077575 13000 2.9* -1.5 1.4
Top pT
ATLAS_2019_I1750330 13000 6.7* +0.70 7.4*
ATLAS_2020_I1801434 13000 4.7 +0.80 5.5
ATLAS_2022_I2037744 13000 1.5* +0.70 2.2
ATLAS_2022_I2077575 13000 1.5* -0.10 1.4*
CMS_2018_I1703993 13000 90 0 90
CMS_2021_I1901295 13000 25 -1.0 24*
top.pt.ttbarRF
CMS_2018_I1703993 13000 88 0 88
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 5.6 +1.6 7.2
Top rapidity
ATLAS_2019_I1750330 13000 8.0 +0.70 8.7
ATLAS_2020_I1801434 13000 5.6 +1.0 6.6
ATLAS_2022_I2037744 13000 1.4 +0.90 2.3*
ATLAS_2022_I2077575 13000 1.7* -0.20 1.5*
CMS_2018_I1703993 13000 83 +1.0 84
CMS_2021_I1901295 13000 25 -1.0 24
topej.dphi
ATLAS_2022_I2037744 13000 2.7 -0.20 2.5
topej.m
ATLAS_2022_I2037744 13000 1.5 -0.20 1.3
χ(ttbar)
ATLAS_2019_I1750330 13000 8.2 +1.3 9.5
ATLAS_2020_I1801434 13000 4.6 +2.8 7.4
ATLAS_2022_I2077575 13000 1.8 +1.00 2.8*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 8.2 -0.70 7.5
ATLAS_2020_I1801434 13000 8.6 -0.30 8.3
ATLAS_2022_I2037744 13000 n/a - n/a
ATLAS_2022_I2077575 13000 2.4 -0.90 1.5
CMS_2018_I1703993 13000 130 0 130
CMS_2021_I1901295 13000 36 -3.0 33
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 94 -1.0 93
CMS_2021_I1901295 13000 25 +1.0 26
ttbar HT
ATLAS_2019_I1750330 13000 6.4 +0.40 6.8
ATLAS_2020_I1801434 13000 4.8 +0.70 5.5
ATLAS_2022_I2037744 13000 1.7 +0.40 2.1
ATLAS_2022_I2077575 13000 2.9* -0.50 2.4
CMS_2021_I1901295 13000 25 -2.0 23
m(ttbar)
ATLAS_2019_I1750330 13000 5.6* +1.0 6.6*
ATLAS_2020_I1801434 13000 5.0 +1.2 6.2
ATLAS_2022_I2037744 13000 n/a - 2.1
ATLAS_2022_I2077575 13000 1.6* +0.100 1.7*
CMS_2018_I1703993 13000 100 0 100
CMS_2021_I1901295 13000 30 +2.0 32
Pcrossttbar
ATLAS_2020_I1801434 13000 7.2 -0.40 6.8
ttbar pT
ATLAS_2019_I1750330 13000 8.0 -0.100 7.9
ATLAS_2020_I1801434 13000 5.5 +0.20 5.7
ATLAS_2022_I2037744 13000 2.6 -0.50 2.1
ATLAS_2022_I2077575 13000 1.5* -0.20 1.3*
CMS_2018_I1703993 13000 80 +3.0 83
CMS_2021_I1901295 13000 22 -1.0 21
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 6.4 -1.1 5.3
ttbar.thetaStar
ATLAS_2022_I2077575 13000 1.8 +0.90 2.7*
CMS_2021_I1901295 13000 33 +1.0 34
Ttbar rapidity
ATLAS_2019_I1750330 13000 7.5 +0.40 7.9
ATLAS_2020_I1801434 13000 3.5 +0.90 4.4*
ATLAS_2022_I2037744 13000 1.7 +1.1 2.8
ATLAS_2022_I2077575 13000 2.1 -0.30 1.8
CMS_2018_I1703993 13000 75 +2.0 77
CMS_2021_I1901295 13000 29 +1.0 30
Mean rapidity
ATLAS_2019_I1750330 13000 11 0 11
ATLAS_2020_I1801434 13000 4.4 +0.60 5.0
ATLAS_2022_I2077575 13000 1.9 0 1.9
ttbarej.ht
ATLAS_2022_I2037744 13000 1.6 +2.0 3.6
ttbarej.m
CMS_2021_I1901295 13000 24 0 24
pT ratio
W to b
ATLAS_2020_I1801434 13000 5.4 +0.40 5.8
pT ratio
W to top
ATLAS_2020_I1801434 13000 5.2 +1.3 6.5
Cross sections
ATLAS_2022_I2037744 13000 6.8 +11 18
ATLAS_2022_I2077575 13000 8.4 -2.1 6.3
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.