Generator / tune

Details for Pythia 6.426 z1-lep vs. 6.427

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Asymmetry
 AC vs Mttbar
 CMS_2016_I1430892 8000 n/a - 1.9
Asymmetry
 AC vs pTttbar
 CMS_2016_I1430892 8000 n/a - 14
Asymmetry
 AC vs yttbar
 CMS_2016_I1430892 8000 n/a - 3.2
Asymmetry
 ACl vs Mttbar
 CMS_2016_I1430892 8000 n/a - 1.7
Asymmetry
 ACl vs pTttbar
 CMS_2016_I1430892 8000 n/a - 1.7
Asymmetry
 ACl vs yttbar
 CMS_2016_I1430892 8000 n/a - 2.7
Asymmetry
 Energy asymmetry
 ATLAS_2021_I1941095 13000 n/a - 0.96
B jet
 η
 CMS_2018_I1703993 13000 50 +9.0 59
B jet
 pT
 CMS_2018_I1703993 13000 61 +10 71
bjbj.m
 CMS_2018_I1703993 13000 69 +18 87
bjbj.pt
 CMS_2018_I1703993 13000 67 +8.0 75
bjt.dphi
 ATLAS_2022_I2037744 13000 1.8 -0.30 1.5
ej.pt
 ATLAS_2022_I2037744 13000 3.4* -0.40 3.0
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 3.0 -0.50 2.5
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 3.2 +0.60 3.8
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 3.3 -0.100 3.2
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 2.4 -0.30 2.1
ejej.dphi
 ATLAS_2022_I2037744 13000 0.81 +0.16 0.97
ejets.ht
 CMS_2021_I1901295 13000 13 -1.0 12
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 4.9 0 4.9
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 3.1 -0.50 2.6
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.85 +0.030 0.88
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.57 +0.080 0.65
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - 5.7
CMS_2019_I1764472 13000 1.0 -0.63 0.37
Jet pT
 ATLAS_2014_I1304688 7000 17 -1.0 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 4.0 -1.4 2.6
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.82 -0.37 0.45
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.9 +0.20 2.1
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.3 -0.10 1.2
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 2.3 +0.20 2.5
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 3.2 -0.10 3.1
Lepton η
 ATLAS_2019_I1759875 13000 42 -1.0 41
CMS_2018_I1703993 13000 31 +7.0 38
Lepton pT
 ATLAS_2019_I1759875 13000 56 -1.0 55
CMS_2018_I1703993 13000 58 +11 69
CMS_2021_I1901295 13000 14 0 14
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 5.6 -1.7 3.9
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.97 -0.28 0.69
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 7.0 -2.3 4.7
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 47 -1.0 46
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - 0.94
CMS_2018_I1703993 13000 43 +9.0 52
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 28 0 28
CMS_2018_I1703993 13000 48 +14 62
Dilepton
 HT
 ATLAS_2019_I1759875 13000 46 -1.0 45
Dilepton
 m
 ATLAS_2019_I1759875 13000 45 -2.0 43
CMS_2018_I1703993 13000 52 +9.0 61
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 45 0 45
CMS_2018_I1703993 13000 50 +8.0 58
Dilepton
 y
 ATLAS_2019_I1759875 13000 33 0 33
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 1.5 +1.3 2.8
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 22 0 22
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 6.4 +1.3 7.7
CMS_2018_I1703993 13000 48 +14 62
sumpt
 ATLAS_2022_I2152933 13000 3.9 -1.4 2.5
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 8.7 -0.30 8.4
ATLAS_2020_I1801434 13000 4.5* +0.50 5.0
ATLAS_2022_I2077575 13000 2.1 -0.40 1.7
Top pT
 ATLAS_2019_I1750330 13000 6.0 +0.20 6.2
ATLAS_2020_I1801434 13000 3.9 +0.60 4.5
ATLAS_2022_I2037744 13000 0.71 +2.0 2.7
ATLAS_2022_I2077575 13000 1.4* +0.10 1.5*
CMS_2018_I1703993 13000 83 +12 95
CMS_2021_I1901295 13000 22 +1.0 23
top.pt.ttbarRF
 CMS_2018_I1703993 13000 77 +11 88
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 6.5 -0.90 5.6
Top rapidity
 ATLAS_2019_I1750330 13000 7.6 -0.20 7.4
ATLAS_2020_I1801434 13000 4.4 +0.40 4.8
ATLAS_2022_I2037744 13000 0.56* +0.22 0.78*
ATLAS_2022_I2077575 13000 1.9* -0.100 1.8*
CMS_2018_I1703993 13000 74 +10 84
CMS_2021_I1901295 13000 25 -1.0 24
topej.dphi
 ATLAS_2022_I2037744 13000 2.9 0 2.9
topej.m
 ATLAS_2022_I2037744 13000 1.0 -0.27 0.73
χ(ttbar)
 ATLAS_2019_I1750330 13000 8.9 -0.20 8.7
ATLAS_2020_I1801434 13000 4.6 +0.30 4.9
ATLAS_2022_I2077575 13000 2.5* -0.80 1.7
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 7.0 +0.100 7.1
ATLAS_2020_I1801434 13000 5.5 +0.40 5.9
ATLAS_2022_I2037744 13000 1.7 -0.50 1.2
ATLAS_2022_I2077575 13000 1.6 +0.30 1.9
CMS_2018_I1703993 13000 100 +20 120
CMS_2021_I1901295 13000 29 +1.0 30
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - 0.95
CMS_2018_I1703993 13000 81 +13 94
CMS_2021_I1901295 13000 26 -2.0 24
ttbar HT
 ATLAS_2019_I1750330 13000 6.6 -0.100 6.5
ATLAS_2020_I1801434 13000 3.7 +0.60 4.3
ATLAS_2022_I2037744 13000 0.71 - n/a
ATLAS_2022_I2077575 13000 1.4 +0.50 1.9
CMS_2021_I1901295 13000 23 +1.0 24
m(ttbar)
 ATLAS_2019_I1750330 13000 4.4 +0.40 4.8
ATLAS_2020_I1801434 13000 4.2 +0.100 4.3
ATLAS_2022_I2037744 13000 1.3 - n/a
ATLAS_2022_I2077575 13000 1.5* 0 1.5*
CMS_2018_I1703993 13000 91 +9.0 100
CMS_2021_I1901295 13000 29 0 29
Pcrossttbar
 ATLAS_2020_I1801434 13000 4.0 +1.0 5.0
ttbar pT
 ATLAS_2019_I1750330 13000 7.7 -0.30 7.4
ATLAS_2020_I1801434 13000 4.6 +0.80 5.4
ATLAS_2022_I2037744 13000 2.4 -0.70 1.7
ATLAS_2022_I2077575 13000 1.7* +0.30 2.0*
CMS_2018_I1703993 13000 72 +11 83
CMS_2021_I1901295 13000 17 +1.0 18
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 4.5 +2.5 7.0
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 2.4* -0.80 1.6
CMS_2021_I1901295 13000 32 0 32
Ttbar rapidity
 ATLAS_2019_I1750330 13000 7.1 +0.10 7.2
ATLAS_2020_I1801434 13000 3.7 0 3.7
ATLAS_2022_I2037744 13000 2.1 -1.3 0.81
ATLAS_2022_I2077575 13000 1.7 +0.20 1.9
CMS_2018_I1703993 13000 69 +7.0 76
CMS_2021_I1901295 13000 28 +1.0 29
Mean rapidity
 ATLAS_2019_I1750330 13000 10 0 10
ATLAS_2020_I1801434 13000 4.7 0 4.7
ATLAS_2022_I2077575 13000 1.6 +0.50 2.1
ttbarej.ht
 ATLAS_2022_I2037744 13000 2.2 +3.9 6.1
ttbarej.m
 CMS_2021_I1901295 13000 19 +1.0 20
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 4.1 +0.80 4.9
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 4.6 +0.40 5.0
Cross sections
 ATLAS_2022_I2037744 13000 0.58 +0.34 0.92
ATLAS_2022_I2077575 13000 6.3 +2.4 8.7
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.