Generator / tune

Details for Pythia 6.427 360 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 0.32 +0.78 1.1
B jet
η
CMS_2018_I1703993 13000 57 +1.0 58
B jet
pT
CMS_2018_I1703993 13000 67 +1.0 68
bjbj.m
CMS_2018_I1703993 13000 83 +1.0 84
bjbj.pt
CMS_2018_I1703993 13000 71 0 71
bjt.dphi
ATLAS_2022_I2037744 13000 2.0 +0.20 2.2
ej.pt
ATLAS_2022_I2037744 13000 3.2* -0.30 2.9*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 2.7 +1.1 3.8
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 3.1 +0.80 3.9
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.1 +0.50 3.6
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.7 +0.90 3.6
ejej.dphi
ATLAS_2022_I2037744 13000 1.8 -0.90 0.90
ejets.ht
CMS_2021_I1901295 13000 21 -4.0 17
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.2 +0.30 3.5
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.7 +0.30 3.0
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.19 +0.32 0.51
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.13 +0.11 0.24
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.53 +0.87 1.4
Jet pT
ATLAS_2014_I1304688 7000 18 0 18
ATLAS_2019_I1718132 13000 n/a - n/a
Dijet
Δη
ATLAS_2019_I1718132 13000 27 - n/a
Dijet
Δφ
ATLAS_2019_I1718132 13000 31 - n/a
Dijet
HT
ATLAS_2019_I1718132 13000 n/a - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 41 - n/a
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 1.4 -0.100 1.3
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.21 -0.0100 0.20
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.9 +0.10 2.0
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.2 +0.10 1.3
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.0 0 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.5 +0.20 2.7
Lepton η
ATLAS_2019_I1759875 13000 38 -4.0 34
CMS_2018_I1703993 13000 35 +1.0 36
Lepton pT
ATLAS_2019_I1759875 13000 50 -3.0 47
CMS_2018_I1703993 13000 66 +3.0 69
CMS_2021_I1901295 13000 14 +1.0 15
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 1.5 +0.80 2.3
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.11 +0.050 0.16
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 2.5 +1.0 3.5
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 44* - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 43 -4.0 39
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 47 +9.0 56
Dilepton
Δφ
ATLAS_2019_I1718132 13000 23 - n/a
ATLAS_2019_I1759875 13000 27 +1.0 28*
CMS_2018_I1703993 13000 59 -2.0 57
Dilepton
HT
ATLAS_2019_I1759875 13000 43 -5.0 38
Dilepton
m
ATLAS_2019_I1759875 13000 41 -6.0 35
CMS_2018_I1703993 13000 58 0 58
Dilepton
pT
ATLAS_2019_I1718132 13000 24 - n/a
ATLAS_2019_I1759875 13000 41 -2.0 39
CMS_2018_I1703993 13000 56 -2.0 54
Dilepton
y
ATLAS_2019_I1759875 13000 30 -2.0 28
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 32 -2.0 30
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 -1.0 23
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 8.0 -1.3 6.7
CMS_2018_I1703993 13000 53 +2.0 55
sumpt
ATLAS_2022_I2152933 13000 27 +2.0 29
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 8.3 0 8.3
ATLAS_2020_I1801434 13000 5.0 -0.20 4.8
ATLAS_2022_I2077575 13000 1.2 +0.40 1.6
Top pT
ATLAS_2019_I1750330 13000 7.0* +0.30 7.3
ATLAS_2020_I1801434 13000 4.4 -0.20 4.2
ATLAS_2022_I2037744 13000 1.5 +1.9 3.4
ATLAS_2022_I2077575 13000 1.6* -0.10 1.5*
CMS_2018_I1703993 13000 85 +1.0 86
CMS_2021_I1901295 13000 26* -3.0 23*
top.pt.ttbarRF
CMS_2018_I1703993 13000 83 0 83
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 5.1 -0.20 4.9
Top rapidity
ATLAS_2019_I1750330 13000 8.0 +0.60 8.6
ATLAS_2020_I1801434 13000 5.2 -0.10 5.1
ATLAS_2022_I2037744 13000 2.0 +0.70 2.7
ATLAS_2022_I2077575 13000 1.9* -0.30 1.6*
CMS_2018_I1703993 13000 78 0 78
CMS_2021_I1901295 13000 25 0 25
topej.dphi
ATLAS_2022_I2037744 13000 2.8 +0.10 2.9
topej.m
ATLAS_2022_I2037744 13000 2.1 -0.20 1.9
χ(ttbar)
ATLAS_2019_I1750330 13000 9.2 -0.20 9.0
ATLAS_2020_I1801434 13000 4.9 0 4.9
ATLAS_2022_I2077575 13000 2.2* -0.20 2.0
Δφ(ttbar)
ATLAS_2019_I1750330 13000 8.0 -0.30 7.7
ATLAS_2020_I1801434 13000 6.8 -0.60 6.2
ATLAS_2022_I2037744 13000 8.7 -4.7 4.0
ATLAS_2022_I2077575 13000 1.9 -0.100 1.8
CMS_2018_I1703993 13000 120 -10 110
CMS_2021_I1901295 13000 37 -2.0 35
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 88 -3.0 85
CMS_2021_I1901295 13000 26 0 26
ttbar HT
ATLAS_2019_I1750330 13000 6.4 +0.40 6.8
ATLAS_2020_I1801434 13000 3.6 +0.80 4.4
ATLAS_2022_I2037744 13000 n/a - 3.1
ATLAS_2022_I2077575 13000 2.3* -0.100 2.2*
CMS_2021_I1901295 13000 24 +1.0 25
m(ttbar)
ATLAS_2019_I1750330 13000 5.9* +0.60 6.5
ATLAS_2020_I1801434 13000 4.6 -0.30 4.3
ATLAS_2022_I2037744 13000 2.5 - n/a
ATLAS_2022_I2077575 13000 1.7* -0.20 1.5
CMS_2018_I1703993 13000 96 -8.0 88
CMS_2021_I1901295 13000 31 +1.0 32
Pcrossttbar
ATLAS_2020_I1801434 13000 5.2 +0.30 5.5
ttbar pT
ATLAS_2019_I1750330 13000 7.5 +0.40 7.9
ATLAS_2020_I1801434 13000 4.8 -0.70 4.1*
ATLAS_2022_I2037744 13000 2.6 +1.3 3.9
ATLAS_2022_I2077575 13000 1.5* +0.50 2.0
CMS_2018_I1703993 13000 74 -1.0 73
CMS_2021_I1901295 13000 23 -2.0 21
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.7 -0.10 3.6
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.6* -0.10 2.5
CMS_2021_I1901295 13000 33 +1.0 34
Ttbar rapidity
ATLAS_2019_I1750330 13000 7.4 +0.70 8.1
ATLAS_2020_I1801434 13000 3.4 +0.30 3.7
ATLAS_2022_I2037744 13000 1.7 +1.3 3.0
ATLAS_2022_I2077575 13000 2.0 +0.10 2.1
CMS_2018_I1703993 13000 73 -1.0 72
CMS_2021_I1901295 13000 30 0 30
Mean rapidity
ATLAS_2019_I1750330 13000 11 0 11
ATLAS_2020_I1801434 13000 4.2 -0.10 4.1
ATLAS_2022_I2077575 13000 2.0 -0.10 1.9
ttbarej.ht
ATLAS_2022_I2037744 13000 1.7 +2.6 4.3
ttbarej.m
CMS_2021_I1901295 13000 25 -1.0 24
pT ratio
W to b
ATLAS_2020_I1801434 13000 5.4 -1.2 4.2
pT ratio
W to top
ATLAS_2020_I1801434 13000 4.9 -0.20 4.7
Cross sections
ATLAS_2022_I2037744 13000 5.8 +14 20
ATLAS_2022_I2077575 13000 6.9 +1.4 8.3
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.