Generator / tune

Details for Pythia 8.306 eetherm vs. 8.307

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (8.306) Δ χ2+5% (8.307)
Asymmetry
AC vs Mttbar
CMS_2016_I1430892 8000 2.1 -1.4 0.71
Asymmetry
AC vs pTttbar
CMS_2016_I1430892 8000 14 -6.9 7.1
Asymmetry
AC vs yttbar
CMS_2016_I1430892 8000 4.3 +0.90 5.2
Asymmetry
ACl vs Mttbar
CMS_2016_I1430892 8000 1.6 +2.3 3.9
Asymmetry
ACl vs pTttbar
CMS_2016_I1430892 8000 4.0 -3.3 0.66
Asymmetry
ACl vs yttbar
CMS_2016_I1430892 8000 7.1 -4.6 2.5
Asymmetry
Energy asymmetry
ATLAS_2021_I1941095 13000 1.6 -1.2 0.37
B jet
η
CMS_2018_I1703993 13000 19 -2.0 17
B jet
pT
CMS_2018_I1703993 13000 21 -2.0 19
bjbj.m
CMS_2018_I1703993 13000 28 -5.0 23
bjbj.pt
CMS_2018_I1703993 13000 23 -3.0 20
bjt.dphi
ATLAS_2022_I2037744 13000 0.54 +1.1 1.6
ej.pt
ATLAS_2022_I2037744 13000 1.9 +0.20 2.1*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 2.7 +0.60 3.3
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 3.6 -1.8 1.8
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.4 -1.1 2.3
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.2 +0.70 2.9*
ejej.dphi
ATLAS_2022_I2037744 13000 1.4 -0.95 0.45
ejets.ht
CMS_2021_I1901295 13000 11 0 11
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.0 -0.80 2.2
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.6 -0.80 1.8
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.24 -0.18 0.057
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.10 -0.063 0.037
Jet mass
Jet mass
CMS_2017_I1518399 8000 5.1 -1.6 3.5
CMS_2019_I1764472 13000 0.26 +1.7 2.0
Jet pT
ATLAS_2014_I1304688 7000 7.2 -0.20 7.0
ATLAS_2019_I1718132 13000 4.9* - n/a
Dijet
Δη
ATLAS_2019_I1718132 13000 6.4 +2.3 8.7
Dijet
Δφ
ATLAS_2019_I1718132 13000 8.1 +0.50 8.6
Dijet
HT
ATLAS_2019_I1718132 13000 4.5 - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 8.8 +2.2 11
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 1.8 +0.30 2.1
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.27 +0.040 0.31
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.8 +0.100 1.9
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.1 0 1.1
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.8 -0.10 1.7
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.5 +0.30 2.8
Lepton η
ATLAS_2019_I1759875 13000 13 0 13
CMS_2018_I1703993 13000 12 -2.0 10
Lepton pT
ATLAS_2019_I1759875 13000 17 +2.0 19
CMS_2018_I1703993 13000 23 -4.0 19
CMS_2021_I1901295 13000 7.0 -0.20 6.8
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 4.0 0 4.0
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.51 -0.070 0.44
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 5.7 -0.10 5.6
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 10* +5.0 15*
Dilepton
E
ATLAS_2019_I1759875 13000 16 -1.0 15
Dilepton
Δη
CMS_2016_I1430892 8000 0.30 +0.30 0.60
CMS_2018_I1703993 13000 16 -1.0 15
Dilepton
Δφ
ATLAS_2019_I1718132 13000 6.9 +6.1 13*
ATLAS_2019_I1759875 13000 9.9 +3.1 13*
CMS_2018_I1703993 13000 19 0 19
Dilepton
HT
ATLAS_2019_I1759875 13000 14 +1.0 15
Dilepton
m
ATLAS_2019_I1759875 13000 15 -1.0 14
CMS_2018_I1703993 13000 21 -3.0 18
Dilepton
pT
ATLAS_2019_I1718132 13000 5.9 +2.8 8.7
ATLAS_2019_I1759875 13000 15 0 15
CMS_2018_I1703993 13000 19 -3.0 16
Dilepton
y
ATLAS_2019_I1759875 13000 11 0 11
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 1.3 -0.30 1.0
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 16 -4.0 12
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.4 +0.30 4.7
CMS_2018_I1703993 13000 19 -5.0 14
sumpt
ATLAS_2022_I2152933 13000 2.6 -1.0 1.6
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.5 -0.20 4.3
ATLAS_2020_I1801434 13000 3.8 -0.80 3.0
ATLAS_2022_I2077575 13000 2.4 +0.10 2.5
Top pT
ATLAS_2019_I1750330 13000 4.1* -0.70 3.4*
ATLAS_2020_I1801434 13000 3.1 -0.20 2.9
ATLAS_2022_I2037744 13000 1.0 +0.90 1.9
ATLAS_2022_I2077575 13000 2.3* +0.30 2.6*
CMS_2018_I1703993 13000 28 -3.0 25
CMS_2021_I1901295 13000 13* -1.0 12*
top.pt.ttbarRF
CMS_2018_I1703993 13000 27 -3.0 24
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 4.0 -1.2 2.8
Top rapidity
ATLAS_2019_I1750330 13000 4.4 -0.20 4.2
ATLAS_2020_I1801434 13000 4.1 -1.1 3.0
ATLAS_2022_I2037744 13000 0.77 +1.1 1.9*
ATLAS_2022_I2077575 13000 2.4* +0.20 2.6*
CMS_2018_I1703993 13000 25 -3.0 22
CMS_2021_I1901295 13000 12 -1.0 11
topej.dphi
ATLAS_2022_I2037744 13000 3.0 -0.90 2.1
topej.m
ATLAS_2022_I2037744 13000 0.37 +0.32 0.69
χ(ttbar)
ATLAS_2019_I1750330 13000 4.9 -0.50 4.4
ATLAS_2020_I1801434 13000 4.3 -1.3 3.0
ATLAS_2022_I2077575 13000 4.3* -0.100 4.2*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.4 -0.30 5.1
ATLAS_2020_I1801434 13000 3.8 +0.10 3.9
ATLAS_2022_I2037744 13000 1.4 -0.100 1.3
ATLAS_2022_I2077575 13000 3.3 -0.40 2.9
CMS_2018_I1703993 13000 37 -5.0 32
CMS_2021_I1901295 13000 21 -3.0 18
Δy (ttbar)
CMS_2016_I1430892 8000 0.14 +0.050 0.19
CMS_2018_I1703993 13000 25 -2.0 23
CMS_2021_I1901295 13000 12 -1.0 11
ttbar HT
ATLAS_2019_I1750330 13000 3.9 -0.40 3.5
ATLAS_2020_I1801434 13000 3.1 -1.1 2.0
ATLAS_2022_I2037744 13000 2.2 -0.20 2.0
ATLAS_2022_I2077575 13000 2.5 +0.40 2.9
CMS_2021_I1901295 13000 13 -2.0 11
m(ttbar)
ATLAS_2019_I1750330 13000 3.2 +0.100 3.3*
ATLAS_2020_I1801434 13000 3.3 0 3.3
ATLAS_2022_I2037744 13000 2.7 - n/a
ATLAS_2022_I2077575 13000 2.4* +0.10 2.5*
CMS_2018_I1703993 13000 25 -3.0 22
CMS_2021_I1901295 13000 17 -2.0 15*
Pcrossttbar
ATLAS_2020_I1801434 13000 3.6 -0.60 3.0
ttbar pT
ATLAS_2019_I1750330 13000 4.7 -0.70 4.0
ATLAS_2020_I1801434 13000 3.1 -0.50 2.6
ATLAS_2022_I2037744 13000 0.55 +0.95 1.5
ATLAS_2022_I2077575 13000 2.2* +0.30 2.5*
CMS_2018_I1703993 13000 25 -2.0 23
CMS_2021_I1901295 13000 12 0 12
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 3.4 -1.3 2.1
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.9 +1.6 4.5*
CMS_2021_I1901295 13000 18 -2.0 16
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.4 -0.30 4.1
ATLAS_2020_I1801434 13000 2.7 -0.90 1.8
ATLAS_2022_I2037744 13000 1.7 -0.91 0.79
ATLAS_2022_I2077575 13000 2.5 +0.90 3.4
CMS_2018_I1703993 13000 24 -2.0 22
CMS_2021_I1901295 13000 15 -1.0 14
Mean rapidity
ATLAS_2019_I1750330 13000 6.4 -0.40 6.0
ATLAS_2020_I1801434 13000 3.2 -0.70 2.5
ATLAS_2022_I2077575 13000 4.7* -1.5 3.2
ttbarej.ht
ATLAS_2022_I2037744 13000 1.7 -0.81 0.89
ttbarej.m
CMS_2021_I1901295 13000 13 -2.0 11
pT ratio
W to b
ATLAS_2020_I1801434 13000 4.4 -0.50 3.9
pT ratio
W to top
ATLAS_2020_I1801434 13000 4.3 -1.0 3.3
Cross sections
ATLAS_2022_I2037744 13000 0.55 +0.21 0.76
ATLAS_2022_I2077575 13000 18 0 18
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.