Generator / tune

Details for Pythia 8.306 ppthermNoScat 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 0.27 +1.2 1.5
Asymmetry
AC vs pTttbar
CMS_2016_I1430892 8000 2.8 +6.3 9.1
Asymmetry
AC vs yttbar
CMS_2016_I1430892 8000 0.33 +3.6 3.9
Asymmetry
ACl vs Mttbar
CMS_2016_I1430892 8000 0.23 +0.76 0.99
Asymmetry
ACl vs pTttbar
CMS_2016_I1430892 8000 1.5 -0.30 1.2
Asymmetry
ACl vs yttbar
CMS_2016_I1430892 8000 2.6 +1.9 4.5
Asymmetry
Energy asymmetry
ATLAS_2021_I1941095 13000 n/a - n/a
B jet
η
CMS_2018_I1703993 13000 23 -3.0 20
B jet
pT
CMS_2018_I1703993 13000 25 -2.0 23
bjbj.m
CMS_2018_I1703993 13000 31 -2.0 29
bjbj.pt
CMS_2018_I1703993 13000 28 -4.0 24
bjt.dphi
ATLAS_2022_I2037744 13000 1.0 +0.40 1.4
ej.pt
ATLAS_2022_I2037744 13000 2.2* -0.10 2.1
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 3.1 0 3.1
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 2.7 +0.20 2.9
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.1 -0.10 3.0
ΔR(extra jets)
ATLAS_2020_I1801434 13000 2.6 -0.60 2.0
ejej.dphi
ATLAS_2022_I2037744 13000 1.9 -1.2 0.72
ejets.ht
CMS_2021_I1901295 13000 11 0 11
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 2.4 +0.70 3.1
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 2.5 +0.70 3.2
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.16 +0.020 0.18
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.053 +0.0020 0.055
Jet mass
Jet mass
CMS_2017_I1518399 8000 0.27 +1.8 2.1
CMS_2019_I1764472 13000 0.46 -0.30 0.16
Jet pT
ATLAS_2014_I1304688 7000 6.9 0 6.9
ATLAS_2019_I1718132 13000 4.8* +0.30 5.1
Dijet
Δη
ATLAS_2019_I1718132 13000 5.2 +0.70 5.9
Dijet
Δφ
ATLAS_2019_I1718132 13000 7.2 +0.50 7.7
Dijet
HT
ATLAS_2019_I1718132 13000 4.4 - n/a
Jet mass
Dijet mass
ATLAS_2019_I1718132 13000 7.1 +0.70 7.8
Jet Shapes
Differential Jet Shape
ATLAS_2013_I1243871 7000 2.0 +0.10 2.1
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.29 +0.040 0.33
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 3.2 -0.70 2.5
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 2.3 -0.40 1.9
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 3.0 -0.30 2.7
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 4.1 -0.30 3.8
Lepton η
ATLAS_2019_I1759875 13000 13 0 13
CMS_2018_I1703993 13000 14 -2.0 12
Lepton pT
ATLAS_2019_I1759875 13000 18 +1.0 19
CMS_2018_I1703993 13000 26 -3.0 23
CMS_2021_I1901295 13000 7.0 -0.20 6.8
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 1.4 -0.30 1.1
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.039 -0.0030 0.036
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 2.0 +0.10 2.1
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 7.6 +0.80 8.4
Dilepton
E
ATLAS_2019_I1759875 13000 14 +2.0 16
Dilepton
Δη
CMS_2016_I1430892 8000 0.60 -0.28 0.32
CMS_2018_I1703993 13000 20 -3.0 17
Dilepton
Δφ
ATLAS_2019_I1718132 13000 8.3 -0.90 7.4
ATLAS_2019_I1759875 13000 12* -1.0 11*
CMS_2018_I1703993 13000 26 -1.0 25
Dilepton
HT
ATLAS_2019_I1759875 13000 14 +1.0 15
Dilepton
m
ATLAS_2019_I1759875 13000 13 +3.0 16
CMS_2018_I1703993 13000 23 -1.0 22
Dilepton
pT
ATLAS_2019_I1718132 13000 5.2 +1.2 6.4
ATLAS_2019_I1759875 13000 16 +2.0 18
CMS_2018_I1703993 13000 23 -3.0 20
Dilepton
y
ATLAS_2019_I1759875 13000 9.8 +1.2 11
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 1.2 -0.56 0.64
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 15 0 15
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 3.1 +1.6 4.7
CMS_2018_I1703993 13000 20 -3.0 17
sumpt
ATLAS_2022_I2152933 13000 8.6 -5.0 3.6
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 4.4 0 4.4
ATLAS_2020_I1801434 13000 2.0 +1.9 3.9
ATLAS_2022_I2077575 13000 2.7 +1.1 3.8*
Top pT
ATLAS_2019_I1750330 13000 3.6* 0 3.6*
ATLAS_2020_I1801434 13000 1.8* +1.2 3.0
ATLAS_2022_I2037744 13000 1.1 +0.70 1.8
ATLAS_2022_I2077575 13000 2.3* -0.30 2.0*
CMS_2018_I1703993 13000 31 -3.0 28
CMS_2021_I1901295 13000 13* +1.0 14*
top.pt.ttbarRF
CMS_2018_I1703993 13000 29 0 29
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 3.5 +0.50 4.0
Top rapidity
ATLAS_2019_I1750330 13000 4.4 0 4.4
ATLAS_2020_I1801434 13000 2.7 +1.6 4.3
ATLAS_2022_I2037744 13000 1.2* +0.30 1.5
ATLAS_2022_I2077575 13000 2.6* -0.30 2.3*
CMS_2018_I1703993 13000 26 -1.0 25
CMS_2021_I1901295 13000 12 0 12
topej.dphi
ATLAS_2022_I2037744 13000 2.2 +0.100 2.3
topej.m
ATLAS_2022_I2037744 13000 0.42 +0.58 1.0
χ(ttbar)
ATLAS_2019_I1750330 13000 4.7 0 4.7
ATLAS_2020_I1801434 13000 2.8 +0.70 3.5
ATLAS_2022_I2077575 13000 2.2 +0.60 2.8
Δφ(ttbar)
ATLAS_2019_I1750330 13000 5.2 -0.50 4.7
ATLAS_2020_I1801434 13000 2.6 +1.3 3.9
ATLAS_2022_I2037744 13000 0.32 +1.8 2.1
ATLAS_2022_I2077575 13000 3.1 0 3.1
CMS_2018_I1703993 13000 44 +2.0 46
CMS_2021_I1901295 13000 18 +2.0 20
Δy (ttbar)
CMS_2016_I1430892 8000 0.54 -0.21 0.33
CMS_2018_I1703993 13000 28 -3.0 25
CMS_2021_I1901295 13000 11 +2.0 13
ttbar HT
ATLAS_2019_I1750330 13000 3.5 +0.20 3.7
ATLAS_2020_I1801434 13000 2.5 +0.40 2.9
ATLAS_2022_I2037744 13000 0.85 +0.12 0.97
ATLAS_2022_I2077575 13000 2.7 +1.2 3.9*
CMS_2021_I1901295 13000 11 +1.0 12
m(ttbar)
ATLAS_2019_I1750330 13000 3.0* +0.50 3.5*
ATLAS_2020_I1801434 13000 2.6 +0.80 3.4
ATLAS_2022_I2037744 13000 n/a - 0.39
ATLAS_2022_I2077575 13000 2.4* -0.10 2.3*
CMS_2018_I1703993 13000 26 -2.0 24
CMS_2021_I1901295 13000 17 +1.0 18
Pcrossttbar
ATLAS_2020_I1801434 13000 2.8 +0.80 3.6
ttbar pT
ATLAS_2019_I1750330 13000 4.5 0 4.5*
ATLAS_2020_I1801434 13000 2.2 +1.7 3.9*
ATLAS_2022_I2037744 13000 0.29 +1.5 1.8
ATLAS_2022_I2077575 13000 2.4* -0.30 2.1*
CMS_2018_I1703993 13000 30 -3.0 27
CMS_2021_I1901295 13000 13 -1.0 12
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 2.6 +0.70 3.3
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.6 +1.0 3.6
CMS_2021_I1901295 13000 18 0 18
Ttbar rapidity
ATLAS_2019_I1750330 13000 4.2 -0.20 4.0
ATLAS_2020_I1801434 13000 1.7 +0.70 2.4
ATLAS_2022_I2037744 13000 1.4 +0.40 1.8
ATLAS_2022_I2077575 13000 5.0* -2.6 2.4
CMS_2018_I1703993 13000 25 0 25
CMS_2021_I1901295 13000 15 +1.0 16
Mean rapidity
ATLAS_2019_I1750330 13000 6.3 -0.30 6.0
ATLAS_2020_I1801434 13000 2.9 +0.10 3.0
ATLAS_2022_I2077575 13000 4.7* -2.4 2.3
ttbarej.ht
ATLAS_2022_I2037744 13000 0.87 +0.93 1.8
ttbarej.m
CMS_2021_I1901295 13000 n/a - 14
pT ratio
W to b
ATLAS_2020_I1801434 13000 2.7 +2.0 4.7
pT ratio
W to top
ATLAS_2020_I1801434 13000 2.7 +1.1 3.8
Cross sections
ATLAS_2022_I2037744 13000 0.40 -0.16 0.24
ATLAS_2022_I2077575 13000 19 -3.0 16
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.