Generator / tune

Details for Pythia 6.426 dwt 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 - 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 - n/a
B jet
 η
 CMS_2018_I1703993 13000 140 +10 150
B jet
 pT
 CMS_2018_I1703993 13000 170 +30 200
bjbj.m
 CMS_2018_I1703993 13000 220 +20 240
bjbj.pt
 CMS_2018_I1703993 13000 180 +20 200
bjt.dphi
 ATLAS_2022_I2037744 13000 0.52 +0.12 0.64
ej.pt
 ATLAS_2022_I2037744 13000 2.8 +0.60 3.4
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 5.4 -0.20 5.2
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 5.8 -0.30 5.5
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 5.4 +0.70 6.1
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 4.0 +0.90 4.9
ejej.dphi
 ATLAS_2022_I2037744 13000 1.0 +0.10 1.1
ejets.ht
 CMS_2021_I1901295 13000 22 +1.0 23
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 4.9 +0.80 5.7
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 4.2 +0.50 4.7
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.043 -0.0080 0.035
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.057 -0.031 0.026
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 2.6 -0.40 2.2
Jet pT
 ATLAS_2014_I1304688 7000 25 +1.0 26
ATLAS_2019_I1718132 13000 n/a - 18
Dijet
 Δη
 ATLAS_2019_I1718132 13000 n/a - 29*
Dijet
 Δφ
 ATLAS_2019_I1718132 13000 n/a - 19
Dijet
 HT
 ATLAS_2019_I1718132 13000 n/a - 15
Jet mass
 Dijet mass
 ATLAS_2019_I1718132 13000 n/a - 21
Jet Shapes
 Differential Jet Shape
 ATLAS_2013_I1243871 7000 1.5 +0.30 1.8
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.31 +0.080 0.39
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.6 -0.10 1.5
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 0.89 +0.040 0.93
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 1.6 -0.20 1.4
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 1.8 +0.60 2.4
Lepton η
 ATLAS_2019_I1759875 13000 36 -1.0 35
CMS_2018_I1703993 13000 82 +9.0 91
Lepton pT
 ATLAS_2019_I1759875 13000 48 -1.0 47
CMS_2018_I1703993 13000 170 +20 190
CMS_2021_I1901295 13000 17 -1.0 16
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 7.1 +1.5 8.6
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.71 +0.24 0.95
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 7.7 +1.3 9.0
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - 21
Dilepton
 E
 ATLAS_2019_I1759875 13000 41 -1.0 40
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 120 +10 130
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - 15
ATLAS_2019_I1759875 13000 25 +1.0 26*
CMS_2018_I1703993 13000 130 +10 140
Dilepton
 HT
 ATLAS_2019_I1759875 13000 40 0 40
Dilepton
 m
 ATLAS_2019_I1759875 13000 38 -1.0 37
CMS_2018_I1703993 13000 140 +10 150
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - 17
ATLAS_2019_I1759875 13000 40 -1.0 39
CMS_2018_I1703993 13000 140 +20 160
Dilepton
 y
 ATLAS_2019_I1759875 13000 29 -1.0 28
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 1.5 +0.60 2.1
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 30 -1.0 29
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 7.1 +1.6 8.7
CMS_2018_I1703993 13000 150 0 150
sumpt
 ATLAS_2022_I2152933 13000 5.0 +3.8 8.8
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 7.9 +0.100 8.0
ATLAS_2020_I1801434 13000 4.7 +1.3 6.0
ATLAS_2022_I2077575 13000 2.0 +0.90 2.9
Top pT
 ATLAS_2019_I1750330 13000 6.2 0 6.2
ATLAS_2020_I1801434 13000 4.7 +0.90 5.6*
ATLAS_2022_I2037744 13000 1.2 +0.60 1.8
ATLAS_2022_I2077575 13000 1.5* +0.20 1.7*
CMS_2018_I1703993 13000 170 0 170
CMS_2021_I1901295 13000 29 +1.0 30
top.pt.ttbarRF
 CMS_2018_I1703993 13000 170 +10 180
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 6.4 +0.90 7.3
Top rapidity
 ATLAS_2019_I1750330 13000 7.5 +0.40 7.9
ATLAS_2020_I1801434 13000 7.1 +1.0 8.1
ATLAS_2022_I2037744 13000 0.75* +0.35 1.1
ATLAS_2022_I2077575 13000 1.8* +0.20 2.0*
CMS_2018_I1703993 13000 150 +10 160
CMS_2021_I1901295 13000 28 +2.0 30
topej.dphi
 ATLAS_2022_I2037744 13000 2.9 +0.80 3.7
topej.m
 ATLAS_2022_I2037744 13000 1.4 -0.100 1.3
χ(ttbar)
 ATLAS_2019_I1750330 13000 8.9 +0.20 9.1
ATLAS_2020_I1801434 13000 7.5 -1.0 6.5
ATLAS_2022_I2077575 13000 3.1* +1.2 4.3*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 7.6 -0.30 7.3
ATLAS_2020_I1801434 13000 5.5 +2.3 7.8
ATLAS_2022_I2037744 13000 1.3 -0.43 0.87
ATLAS_2022_I2077575 13000 1.5 +1.1 2.6
CMS_2018_I1703993 13000 260 -10 250
CMS_2021_I1901295 13000 39 +1.0 40
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 160 +10 170
CMS_2021_I1901295 13000 29 +4.0 33
ttbar HT
 ATLAS_2019_I1750330 13000 6.5 +0.20 6.7
ATLAS_2020_I1801434 13000 4.8 +1.3 6.1
ATLAS_2022_I2037744 13000 1.5 -0.20 1.3
ATLAS_2022_I2077575 13000 1.3 +0.50 1.8
CMS_2021_I1901295 13000 27 +1.0 28
m(ttbar)
 ATLAS_2019_I1750330 13000 4.8* 0 4.8*
ATLAS_2020_I1801434 13000 5.2 +1.3 6.5
ATLAS_2022_I2037744 13000 1.3 -0.20 1.1
ATLAS_2022_I2077575 13000 1.1* +0.20 1.3*
CMS_2018_I1703993 13000 180 +20 200*
CMS_2021_I1901295 13000 40 0 40
Pcrossttbar
 ATLAS_2020_I1801434 13000 5.4 +1.5 6.9
ttbar pT
 ATLAS_2019_I1750330 13000 7.5 +0.40 7.9
ATLAS_2020_I1801434 13000 4.7 +1.0 5.7
ATLAS_2022_I2037744 13000 1.5 -0.10 1.4
ATLAS_2022_I2077575 13000 1.3* +0.30 1.6*
CMS_2018_I1703993 13000 160 +10 170
CMS_2021_I1901295 13000 23 0 23
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 4.9 +0.80 5.7
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 1.5 +2.1 3.6*
CMS_2021_I1901295 13000 42 0 42
Ttbar rapidity
 ATLAS_2019_I1750330 13000 7.2 -0.20 7.0
ATLAS_2020_I1801434 13000 4.0 +0.50 4.5
ATLAS_2022_I2037744 13000 0.91 -0.23 0.68
ATLAS_2022_I2077575 13000 1.6 +1.4 3.0*
CMS_2018_I1703993 13000 140 0 140
CMS_2021_I1901295 13000 37 +1.0 38
Mean rapidity
 ATLAS_2019_I1750330 13000 11 0 11
ATLAS_2020_I1801434 13000 5.0 +0.80 5.8
ATLAS_2022_I2077575 13000 1.3 +1.00 2.3
ttbarej.ht
 ATLAS_2022_I2037744 13000 3.1 +3.4 6.5
ttbarej.m
 CMS_2021_I1901295 13000 29 -1.0 28
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 5.9 +0.80 6.7
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 6.2 +1.1 7.3
Cross sections
 ATLAS_2022_I2037744 13000 0.32 -0.32 0.00086
ATLAS_2022_I2077575 13000 5.9 +3.3 9.2
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.