Generator / tune

Details for Pythia 6.427 363 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 0.80 +0.30 1.1
B jet
η
CMS_2018_I1703993 13000 65 -14 51
B jet
pT
CMS_2018_I1703993 13000 76 -19 57
bjbj.m
CMS_2018_I1703993 13000 94 -21 73
bjbj.pt
CMS_2018_I1703993 13000 81 -15 66
bjt.dphi
ATLAS_2022_I2037744 13000 3.0 -0.50 2.5
ej.pt
ATLAS_2022_I2037744 13000 3.1* -0.10 3.0*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 3.6 -1.8 1.8
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 4.1 -1.2 2.9
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 3.7 -1.1 2.6
ΔR(extra jets)
ATLAS_2020_I1801434 13000 3.4 -1.9 1.5
ejej.dphi
ATLAS_2022_I2037744 13000 1.9 -1.0 0.86
ejets.ht
CMS_2021_I1901295 13000 19 -3.0 16
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 3.2 +0.20 3.4
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 3.1* -0.70 2.4
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.16 +0.14 0.30
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.059 +0.091 0.15
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.1 - n/a
Jet pT
ATLAS_2014_I1304688 7000 17 +1.0 18
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 1.7 +0.30 2.0
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.26 +0.010 0.27
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.9 0 1.9
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.0 +0.10 1.1
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 1.9 +0.10 2.0
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.9 +0.30 3.2
Lepton η
ATLAS_2019_I1759875 13000 40 0 40
CMS_2018_I1703993 13000 39 -7.0 32
Lepton pT
ATLAS_2019_I1759875 13000 55 -3.0 52
CMS_2018_I1703993 13000 75 -16 59
CMS_2021_I1901295 13000 16 -1.0 15
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 2.9 -0.60 2.3
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.32 +0.010 0.33
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 3.9 -0.90 3.0
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 46 -2.0 44
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 56 -12 44
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 27 0 27
CMS_2018_I1703993 13000 64 -11 53
Dilepton
HT
ATLAS_2019_I1759875 13000 45 -2.0 43
Dilepton
m
ATLAS_2019_I1759875 13000 42 -1.0 41
CMS_2018_I1703993 13000 69 -16 53
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 44 -1.0 43
CMS_2018_I1703993 13000 63 -13 50
Dilepton
y
ATLAS_2019_I1759875 13000 32 -1.0 31
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 3.2 +0.30 3.5
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 26 -5.0 21
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 8.4 -1.6 6.8
CMS_2018_I1703993 13000 62 -17 45
sumpt
ATLAS_2022_I2152933 13000 4.4 +2.4 6.8
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 8.6 -0.50 8.1
ATLAS_2020_I1801434 13000 6.7* -1.8 4.9
ATLAS_2022_I2077575 13000 1.2 +0.60 1.8
Top pT
ATLAS_2019_I1750330 13000 7.1* -0.30 6.8*
ATLAS_2020_I1801434 13000 4.9 -0.70 4.2
ATLAS_2022_I2037744 13000 3.1 -1.6 1.5
ATLAS_2022_I2077575 13000 1.3* 0 1.3*
CMS_2018_I1703993 13000 91 -15 76
CMS_2021_I1901295 13000 26 0 26*
top.pt.ttbarRF
CMS_2018_I1703993 13000 90 -14 76
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 5.7 -0.90 4.8
Top rapidity
ATLAS_2019_I1750330 13000 8.5 -0.20 8.3
ATLAS_2020_I1801434 13000 5.4 -0.90 4.5
ATLAS_2022_I2037744 13000 2.8 -1.1 1.7
ATLAS_2022_I2077575 13000 1.4* +0.40 1.8*
CMS_2018_I1703993 13000 84 -13 71
CMS_2021_I1901295 13000 27 0 27*
topej.dphi
ATLAS_2022_I2037744 13000 3.1 -0.30 2.8
topej.m
ATLAS_2022_I2037744 13000 4.3 -2.5 1.8
χ(ttbar)
ATLAS_2019_I1750330 13000 9.7 -0.30 9.4
ATLAS_2020_I1801434 13000 4.9 -0.40 4.5
ATLAS_2022_I2077575 13000 2.0* +0.50 2.5*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 8.2 -0.40 7.8
ATLAS_2020_I1801434 13000 8.1 -1.7 6.4
ATLAS_2022_I2037744 13000 4.0 -1.3 2.7
ATLAS_2022_I2077575 13000 1.4 +1.0 2.4
CMS_2018_I1703993 13000 130 -30 100
CMS_2021_I1901295 13000 38 -3.0 35
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 94 -16 78
CMS_2021_I1901295 13000 28 0 28
ttbar HT
ATLAS_2019_I1750330 13000 6.8 -0.30 6.5
ATLAS_2020_I1801434 13000 4.6 -0.30 4.3
ATLAS_2022_I2037744 13000 n/a - 1.5
ATLAS_2022_I2077575 13000 1.5 +0.10 1.6*
CMS_2021_I1901295 13000 26 -3.0 23
m(ttbar)
ATLAS_2019_I1750330 13000 6.0 0 6.0
ATLAS_2020_I1801434 13000 4.3 0 4.3
ATLAS_2022_I2037744 13000 n/a - 3.9
ATLAS_2022_I2077575 13000 1.5* -0.30 1.2*
CMS_2018_I1703993 13000 94 +26 120*
CMS_2021_I1901295 13000 33 0 33
Pcrossttbar
ATLAS_2020_I1801434 13000 5.4 -0.70 4.7
ttbar pT
ATLAS_2019_I1750330 13000 7.9 0 7.9
ATLAS_2020_I1801434 13000 5.1 -0.30 4.8
ATLAS_2022_I2037744 13000 3.1 -1.8 1.3
ATLAS_2022_I2077575 13000 1.3 +0.50 1.8*
CMS_2018_I1703993 13000 84 -16 68
CMS_2021_I1901295 13000 23 +1.0 24
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 4.7 -0.30 4.4
ttbar.thetaStar
ATLAS_2022_I2077575 13000 2.4 +1.5 3.9*
CMS_2021_I1901295 13000 36 -1.0 35
Ttbar rapidity
ATLAS_2019_I1750330 13000 8.0 -0.40 7.6
ATLAS_2020_I1801434 13000 3.1 0 3.1
ATLAS_2022_I2037744 13000 2.9 -0.80 2.1
ATLAS_2022_I2077575 13000 2.8* -0.70 2.1
CMS_2018_I1703993 13000 78 -14 64
CMS_2021_I1901295 13000 31 0 31
Mean rapidity
ATLAS_2019_I1750330 13000 11 0 11
ATLAS_2020_I1801434 13000 3.6 +0.10 3.7
ATLAS_2022_I2077575 13000 2.7* -0.70 2.0
ttbarej.ht
ATLAS_2022_I2037744 13000 4.3 -1.8 2.5
ttbarej.m
CMS_2021_I1901295 13000 25 -1.0 24
pT ratio
W to b
ATLAS_2020_I1801434 13000 4.8 -0.30 4.5
pT ratio
W to top
ATLAS_2020_I1801434 13000 4.9 -0.50 4.4
Cross sections
ATLAS_2022_I2037744 13000 19 -8.0 11
ATLAS_2022_I2077575 13000 5.5 +1.1 6.6
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.