Generator / tune

Details for Pythia 6.427 370 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 n/a - 1.7
B jet
η
CMS_2018_I1703993 13000 43 -2.0 41
B jet
pT
CMS_2018_I1703993 13000 53 -8.0 45
bjbj.m
CMS_2018_I1703993 13000 65 -10 55
bjbj.pt
CMS_2018_I1703993 13000 56 -8.0 48
bjt.dphi
ATLAS_2022_I2037744 13000 1.5 +0.70 2.2
ej.pt
ATLAS_2022_I2037744 13000 2.8* -0.40 2.4
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 2.7 -0.70 2.0
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 2.8 -0.30 2.5
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.0 -0.40 2.6
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.2* 0 2.2
ejej.dphi
ATLAS_2022_I2037744 13000 1.1 +1.2 2.3
ejets.ht
CMS_2021_I1901295 13000 15 -2.0 13
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.9 +0.40 3.3
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 3.3 -0.80 2.5
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.26 +0.070 0.33
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.049 +0.081 0.13
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.6 -0.85 0.75
Jet pT
ATLAS_2014_I1304688 7000 17 0 17
ATLAS_2019_I1718132 13000 8.6* - n/a
Dijet
Δη
ATLAS_2019_I1718132 13000 11 - n/a
Dijet
Δφ
ATLAS_2019_I1718132 13000 11 - n/a
Dijet
HT
ATLAS_2019_I1718132 13000 11 - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 16 - n/a
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 2.5 0 2.5
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.35 +0.010 0.36
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.6 +0.20 1.8
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 0.92 +0.080 1.0
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.7 +0.30 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.8 +0.10 2.9
Lepton η
ATLAS_2019_I1759875 13000 34 -1.0 33
CMS_2018_I1703993 13000 26 -3.0 23
Lepton pT
ATLAS_2019_I1759875 13000 47 -1.0 46
CMS_2018_I1703993 13000 49 -6.0 43
CMS_2021_I1901295 13000 10 +1.0 11
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 5.2 +0.30 5.5
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.94 +0.16 1.1
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 6.5 0 6.5
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 18 - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 38 -1.0 37
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 37 -5.0 32
Dilepton
Δφ
ATLAS_2019_I1718132 13000 8.9 - n/a
ATLAS_2019_I1759875 13000 23 +1.0 24
CMS_2018_I1703993 13000 44 -4.0 40
Dilepton
HT
ATLAS_2019_I1759875 13000 38 +1.0 39
Dilepton
m
ATLAS_2019_I1759875 13000 35 +1.0 36
CMS_2018_I1703993 13000 43 -4.0 39
Dilepton
pT
ATLAS_2019_I1718132 13000 9.4 - n/a
ATLAS_2019_I1759875 13000 38 -1.0 37
CMS_2018_I1703993 13000 41 -4.0 37
Dilepton
y
ATLAS_2019_I1759875 13000 26 0 26
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 0.52 +1.8 2.3
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 20 -4.0 16
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.8 +2.9 7.7
CMS_2018_I1703993 13000 39 -5.0 34
sumpt
ATLAS_2022_I2152933 13000 1.0 +1.6 2.6
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 6.5 +0.70 7.2
ATLAS_2020_I1801434 13000 3.5 +1.7 5.2
ATLAS_2022_I2077575 13000 1.4* -0.55 0.85*
Top pT
ATLAS_2019_I1750330 13000 5.8* +0.60 6.4*
ATLAS_2020_I1801434 13000 3.0 +2.0 5.0
ATLAS_2022_I2037744 13000 1.9 +0.80 2.7
ATLAS_2022_I2077575 13000 1.4* -0.46 0.94*
CMS_2018_I1703993 13000 65 -3.0 62
CMS_2021_I1901295 13000 18 +2.0 20
top.pt.ttbarRF
CMS_2018_I1703993 13000 63 -2.0 61
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 4.9 0 4.9
Top rapidity
ATLAS_2019_I1750330 13000 6.7 +1.0 7.7
ATLAS_2020_I1801434 13000 4.6 -0.100 4.5
ATLAS_2022_I2037744 13000 1.7 +2.0 3.7
ATLAS_2022_I2077575 13000 1.6* -0.50 1.1*
CMS_2018_I1703993 13000 60 -3.0 57
CMS_2021_I1901295 13000 18 0 18
topej.dphi
ATLAS_2022_I2037744 13000 3.5 -1.2 2.3
topej.m
ATLAS_2022_I2037744 13000 1.6 0 1.6
χ(ttbar)
ATLAS_2019_I1750330 13000 7.1 +1.5 8.6
ATLAS_2020_I1801434 13000 5.5 -0.40 5.1
ATLAS_2022_I2077575 13000 1.3 -0.10 1.2*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 7.1 -0.90 6.2
ATLAS_2020_I1801434 13000 5.4 +2.5 7.9
ATLAS_2022_I2037744 13000 1.4 +1.8 3.2
ATLAS_2022_I2077575 13000 2.2 -1.2 1.0
CMS_2018_I1703993 13000 89 -1.0 88
CMS_2021_I1901295 13000 26 0 26
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 64 -1.0 63
CMS_2021_I1901295 13000 18 +3.0 21
ttbar HT
ATLAS_2019_I1750330 13000 5.3 +0.70 6.0
ATLAS_2020_I1801434 13000 2.9 +0.90 3.8
ATLAS_2022_I2037744 13000 n/a - 2.8
ATLAS_2022_I2077575 13000 1.9* -0.80 1.1*
CMS_2021_I1901295 13000 n/a - 19
m(ttbar)
ATLAS_2019_I1750330 13000 5.1 +1.0 6.1*
ATLAS_2020_I1801434 13000 4.2 -0.20 4.0
ATLAS_2022_I2037744 13000 1.6 - n/a
ATLAS_2022_I2077575 13000 1.5* -0.40 1.1*
CMS_2018_I1703993 13000 75 +3.0 78
CMS_2021_I1901295 13000 23 +5.0 28
Pcrossttbar
ATLAS_2020_I1801434 13000 3.8 +0.80 4.6
ttbar pT
ATLAS_2019_I1750330 13000 6.5 +0.40 6.9
ATLAS_2020_I1801434 13000 3.3 +1.5 4.8
ATLAS_2022_I2037744 13000 1.8 +1.6 3.4
ATLAS_2022_I2077575 13000 1.7* -0.70 1.0*
CMS_2018_I1703993 13000 59 +1.0 60
CMS_2021_I1901295 13000 16* +1.0 17*
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.7 +1.0 4.7
ttbar.thetaStar
ATLAS_2022_I2077575 13000 1.6 -0.30 1.3
CMS_2021_I1901295 13000 25 +2.0 27
Ttbar rapidity
ATLAS_2019_I1750330 13000 6.1 +0.60 6.7
ATLAS_2020_I1801434 13000 3.1 +0.30 3.4
ATLAS_2022_I2037744 13000 1.5 +0.40 1.9
ATLAS_2022_I2077575 13000 1.8 -0.80 1.0
CMS_2018_I1703993 13000 55 -3.0 52
CMS_2021_I1901295 13000 22 +3.0 25
Mean rapidity
ATLAS_2019_I1750330 13000 8.6 +0.50 9.1
ATLAS_2020_I1801434 13000 3.7 -0.40 3.3
ATLAS_2022_I2077575 13000 1.5* -0.50 1.0
ttbarej.ht
ATLAS_2022_I2037744 13000 2.7 +0.70 3.4
ttbarej.m
CMS_2021_I1901295 13000 18 +2.0 20
pT ratio
W to b
ATLAS_2020_I1801434 13000 4.3 +0.10 4.4
pT ratio
W to top
ATLAS_2020_I1801434 13000 3.8 +0.50 4.3
Cross sections
ATLAS_2022_I2037744 13000 4.9 +9.1 14
ATLAS_2022_I2077575 13000 4.6 -1.8 2.8
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.