Generator / tune

Details for Pythia 6.427 347 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 1.1 -0.43 0.67
B jet
η
CMS_2018_I1703993 13000 21 +5.0 26
B jet
pT
CMS_2018_I1703993 13000 24 +4.0 28
bjbj.m
CMS_2018_I1703993 13000 29 +7.0 36
bjbj.pt
CMS_2018_I1703993 13000 25 +4.0 29
bjt.dphi
ATLAS_2022_I2037744 13000 3.4 -2.3 1.1
ej.pt
ATLAS_2022_I2037744 13000 2.0 +0.40 2.4*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 2.2 -0.40 1.8
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 3.2 -0.30 2.9
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.0 -0.70 2.3
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.7 -0.90 1.8
ejej.dphi
ATLAS_2022_I2037744 13000 1.8 -0.94 0.86
ejets.ht
CMS_2021_I1901295 13000 8.4 +0.60 9.0
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.0 +1.3 4.3
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 3.5 -1.1 2.4
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.14 +0.15 0.29
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.052 +0.078 0.13
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.45 +0.29 0.74
Jet pT
ATLAS_2014_I1304688 7000 9.7 -1.2 8.5
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 2.3 -0.20 2.1
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.30 -0.070 0.23
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.9 +0.40 2.3
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.4 +0.50 1.9
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.9 +0.40 2.3
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.9 +0.80 3.7
Lepton η
ATLAS_2019_I1759875 13000 18 +3.0 21
CMS_2018_I1703993 13000 13 +3.0 16
Lepton pT
ATLAS_2019_I1759875 13000 24 +5.0 29
CMS_2018_I1703993 13000 24 +5.0 29
CMS_2021_I1901295 13000 6.6 +0.40 7.0
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 3.4 +0.60 4.0
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.57 +0.11 0.68
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 4.1 +0.40 4.5
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 19 +4.0 23
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 17 +5.0 22
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 12 +6.0 18*
CMS_2018_I1703993 13000 23 +3.0 26
Dilepton
HT
ATLAS_2019_I1759875 13000 19 +5.0 24
Dilepton
m
ATLAS_2019_I1759875 13000 18 +4.0 22
CMS_2018_I1703993 13000 23 +4.0 27
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 20 +4.0 24
CMS_2018_I1703993 13000 21 +1.0 22
Dilepton
y
ATLAS_2019_I1759875 13000 14 +3.0 17
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 2.2 +3.3 5.5
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 11 0 11
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 5.9 -1.2 4.7
CMS_2018_I1703993 13000 20 +3.0 23
sumpt
ATLAS_2022_I2152933 13000 2.2 +2.6 4.8
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.6 0 4.6
ATLAS_2020_I1801434 13000 4.3* -1.0 3.3
ATLAS_2022_I2077575 13000 4.4* -2.6 1.8
Top pT
ATLAS_2019_I1750330 13000 3.8* -0.100 3.7*
ATLAS_2020_I1801434 13000 4.4 -1.5 2.9*
ATLAS_2022_I2037744 13000 1.5 -1.1 0.42*
ATLAS_2022_I2077575 13000 2.2* -0.50 1.7*
CMS_2018_I1703993 13000 30 +7.0 37
CMS_2021_I1901295 13000 12 0 12*
top.pt.ttbarRF
CMS_2018_I1703993 13000 29 +7.0 36
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 4.3 -0.80 3.5
Top rapidity
ATLAS_2019_I1750330 13000 4.5 0 4.5
ATLAS_2020_I1801434 13000 4.3 -0.100 4.2
ATLAS_2022_I2037744 13000 1.2* +0.50 1.7
ATLAS_2022_I2077575 13000 2.5* -0.90 1.6*
CMS_2018_I1703993 13000 27 +5.0 32
CMS_2021_I1901295 13000 12 0 12
topej.dphi
ATLAS_2022_I2037744 13000 2.2 -0.10 2.1
topej.m
ATLAS_2022_I2037744 13000 0.70 +1.2 1.9
χ(ttbar)
ATLAS_2019_I1750330 13000 5.9 -0.40 5.5
ATLAS_2020_I1801434 13000 4.7 -1.4 3.3
ATLAS_2022_I2077575 13000 2.6 +0.20 2.8*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.0 -0.20 4.8
ATLAS_2020_I1801434 13000 5.5 -1.3 4.2
ATLAS_2022_I2037744 13000 2.0 - n/a
ATLAS_2022_I2077575 13000 3.5 -1.9 1.6
CMS_2018_I1703993 13000 41 +12 53
CMS_2021_I1901295 13000 17 +3.0 20
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 29 +7.0 36
CMS_2021_I1901295 13000 12 0 12
ttbar HT
ATLAS_2019_I1750330 13000 3.8 -0.20 3.6
ATLAS_2020_I1801434 13000 4.3 -1.4 2.9
ATLAS_2022_I2037744 13000 1.5 -0.92 0.58
ATLAS_2022_I2077575 13000 2.6 -0.70 1.9*
CMS_2021_I1901295 13000 11 - n/a
m(ttbar)
ATLAS_2019_I1750330 13000 3.7* -0.10 3.6*
ATLAS_2020_I1801434 13000 5.6 -2.4 3.2
ATLAS_2022_I2037744 13000 0.80 +0.040 0.84
ATLAS_2022_I2077575 13000 2.1* -0.40 1.7*
CMS_2018_I1703993 13000 37 +14 51
CMS_2021_I1901295 13000 16 +1.0 17*
Pcrossttbar
ATLAS_2020_I1801434 13000 4.8 -1.4 3.4
ttbar pT
ATLAS_2019_I1750330 13000 4.6 +0.10 4.7
ATLAS_2020_I1801434 13000 4.6 -1.5 3.1
ATLAS_2022_I2037744 13000 0.60 +1.2 1.8
ATLAS_2022_I2077575 13000 2.4* -0.90 1.5*
CMS_2018_I1703993 13000 27 +7.0 34
CMS_2021_I1901295 13000 11 0 11*
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.3 +1.4 4.7
ttbar.thetaStar
ATLAS_2022_I2077575 13000 3.3 -1.3 2.0
CMS_2021_I1901295 13000 17 -1.0 16
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.4 -0.30 4.1
ATLAS_2020_I1801434 13000 2.7* -0.10 2.6
ATLAS_2022_I2037744 13000 0.80 -0.020 0.78
ATLAS_2022_I2077575 13000 2.8 +0.40 3.2
CMS_2018_I1703993 13000 25 +5.0 30
CMS_2021_I1901295 13000 15 0 15
Mean rapidity
ATLAS_2019_I1750330 13000 6.1 -0.20 5.9
ATLAS_2020_I1801434 13000 3.6 -0.70 2.9
ATLAS_2022_I2077575 13000 2.9 +0.50 3.4
ttbarej.ht
ATLAS_2022_I2037744 13000 2.4 -1.0 1.4
ttbarej.m
CMS_2021_I1901295 13000 11 +2.0 13
pT ratio
W to b
ATLAS_2020_I1801434 13000 4.8 -1.1 3.7
pT ratio
W to top
ATLAS_2020_I1801434 13000 4.3 -0.20 4.1
Cross sections
ATLAS_2022_I2037744 13000 0.64 +0.96 1.6
ATLAS_2022_I2077575 13000 18 -11 6.9
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.