Generator / tune

Details for Pythia 6.427 p2010 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 1.5 -1.1 0.36
B jet
η
CMS_2018_I1703993 13000 54 +4.0 58
B jet
pT
CMS_2018_I1703993 13000 60 +8.0 68
bjbj.m
CMS_2018_I1703993 13000 75 +10 85
bjbj.pt
CMS_2018_I1703993 13000 63 +11 74
bjt.dphi
ATLAS_2022_I2037744 13000 2.0 +0.40 2.4
ej.pt
ATLAS_2022_I2037744 13000 3.0* -0.20 2.8*
pT ratio
Extra jets
ATLAS_2020_I1801434 13000 4.0 -1.4 2.6
pT ratio
Extra to leading jet
ATLAS_2020_I1801434 13000 4.4 -0.90 3.5
pT ratio
Extra jet to Top
ATLAS_2020_I1801434 13000 4.3 -1.2 3.1
ΔR(extra jets)
ATLAS_2020_I1801434 13000 3.4 -1.0 2.4
ejej.dphi
ATLAS_2022_I2037744 13000 3.1 -2.3 0.78
ejets.ht
CMS_2021_I1901295 13000 17 -1.0 16
ΔR(extra, leading jet)
ATLAS_2020_I1801434 13000 4.9 -1.6 3.3
ΔR(top, extra jet)
ATLAS_2020_I1801434 13000 3.4 -0.60 2.8
Jets + Veto
Gap frac. vs Veto scale
ATLAS_2012_I1094568 7000 0.62 -0.15 0.47
Jets + Veto
Gap frac. vs scalar veto scale
ATLAS_2012_I1094568 7000 0.36 -0.100 0.26
Jet mass
Jet mass
CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.59 +0.61 1.2
Jet pT
ATLAS_2014_I1304688 7000 19 -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 2.2 +0.100 2.3
Jet Shapes
Integral Jet Shape
ATLAS_2013_I1243871 7000 0.36 +0.020 0.38
Identified Particles
E(KS0)
ATLAS_2019_I1746286 7000 1.7 +0.10 1.8
Identified Particles
η(KS0)
ATLAS_2019_I1746286 7000 1.0 -0.010 0.99
Identified Particles
pT(KS0)
ATLAS_2019_I1746286 7000 2.0 -0.10 1.9
Identified Particles
E(KS0) to E(jet) ratio
ATLAS_2019_I1746286 7000 2.6 +0.50 3.1
Lepton η
ATLAS_2019_I1759875 13000 38 +7.0 45
CMS_2018_I1703993 13000 33 +1.0 34
Lepton pT
ATLAS_2019_I1759875 13000 51 +11 62
CMS_2018_I1703993 13000 60 +7.0 67
CMS_2021_I1901295 13000 16 -2.0 14
Identified Particles
E(Λ0)
ATLAS_2019_I1746286 7000 3.6 -0.10 3.5
Identified Particles
η(Λ0)
ATLAS_2019_I1746286 7000 0.47 +0.080 0.55
Identified Particles
pT0)
ATLAS_2019_I1746286 7000 5.2 -0.70 4.5
Δφ(lepton,jet)
ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
E
ATLAS_2019_I1759875 13000 43 +8.0 51
Dilepton
Δη
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 43 +7.0 50
Dilepton
Δφ
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 30* +1.0 31
CMS_2018_I1703993 13000 53 +6.0 59
Dilepton
HT
ATLAS_2019_I1759875 13000 42 +8.0 50
Dilepton
m
ATLAS_2019_I1759875 13000 40 +7.0 47
CMS_2018_I1703993 13000 55 +5.0 60
Dilepton
pT
ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 42 +8.0 50
CMS_2018_I1703993 13000 52 +5.0 57
Dilepton
y
ATLAS_2019_I1759875 13000 30 +6.0 36
ST(leptons, jets)
ATLAS_2019_I1718132 13000 n/a - n/a
nch
ATLAS_2022_I2152933 13000 0.96 +0.84 1.8
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 22 -1.0 21
Jet Multiplicities
Jet multiplicity
ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 7.1 +0.20 7.3
CMS_2018_I1703993 13000 49 +7.0 56
sumpt
ATLAS_2022_I2152933 13000 1.6 +0.20 1.8
Jet Multiplicities
Subjet multiplicity
ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
ATLAS_2019_I1750330 13000 8.3 -0.50 7.8
ATLAS_2020_I1801434 13000 5.4 -0.50 4.9
ATLAS_2022_I2077575 13000 3.1* -1.5 1.6*
Top pT
ATLAS_2019_I1750330 13000 6.6 +0.30 6.9*
ATLAS_2020_I1801434 13000 4.4 -0.40 4.0
ATLAS_2022_I2037744 13000 1.6 +0.50 2.1
ATLAS_2022_I2077575 13000 1.3* +0.100 1.4*
CMS_2018_I1703993 13000 80 +13 93
CMS_2021_I1901295 13000 23* 0 23*
top.pt.ttbarRF
CMS_2018_I1703993 13000 78 +12 90
pT ratio
Top quarks
ATLAS_2020_I1801434 13000 5.9 -0.70 5.2
Top rapidity
ATLAS_2019_I1750330 13000 8.1 0 8.1
ATLAS_2020_I1801434 13000 6.0 -0.90 5.1
ATLAS_2022_I2037744 13000 2.1 +1.1 3.2*
ATLAS_2022_I2077575 13000 1.7* -0.20 1.5
CMS_2018_I1703993 13000 75 +11 86
CMS_2021_I1901295 13000 25 -1.0 24
topej.dphi
ATLAS_2022_I2037744 13000 2.6 -0.20 2.4
topej.m
ATLAS_2022_I2037744 13000 4.4 -2.5 1.9
χ(ttbar)
ATLAS_2019_I1750330 13000 8.8 +0.20 9.0
ATLAS_2020_I1801434 13000 5.3 -0.70 4.6
ATLAS_2022_I2077575 13000 2.0 -0.60 1.4*
Δφ(ttbar)
ATLAS_2019_I1750330 13000 7.5 0 7.5
ATLAS_2020_I1801434 13000 6.5 +0.40 6.9
ATLAS_2022_I2037744 13000 3.0 +0.50 3.5
ATLAS_2022_I2077575 13000 2.4 -0.40 2.0
CMS_2018_I1703993 13000 110 +20 130
CMS_2021_I1901295 13000 35 0 35
Δy (ttbar)
CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 81 +14 95
CMS_2021_I1901295 13000 25 +1.0 26
ttbar HT
ATLAS_2019_I1750330 13000 6.5 -0.100 6.4
ATLAS_2020_I1801434 13000 5.0 -1.1 3.9
ATLAS_2022_I2037744 13000 1.6 - n/a
ATLAS_2022_I2077575 13000 1.4 0 1.4
CMS_2021_I1901295 13000 24 0 24
m(ttbar)
ATLAS_2019_I1750330 13000 5.4 +0.80 6.2*
ATLAS_2020_I1801434 13000 5.0 -0.90 4.1
ATLAS_2022_I2037744 13000 3.1 -0.40 2.7
ATLAS_2022_I2077575 13000 1.5* -0.20 1.3*
CMS_2018_I1703993 13000 88 +8.0 96
CMS_2021_I1901295 13000 30 +1.0 31
Pcrossttbar
ATLAS_2020_I1801434 13000 5.5 -0.40 5.1
ttbar pT
ATLAS_2019_I1750330 13000 7.5 +0.20 7.7
ATLAS_2020_I1801434 13000 4.9* +0.40 5.3*
ATLAS_2022_I2037744 13000 1.7 +1.5 3.2
ATLAS_2022_I2077575 13000 2.6* -0.50 2.1*
CMS_2018_I1703993 13000 72 +12 84
CMS_2021_I1901295 13000 21 0 21
pT ratio
ttbar to extra jet
ATLAS_2020_I1801434 13000 6.1 -3.1 3.0
ttbar.thetaStar
ATLAS_2022_I2077575 13000 1.9 +0.50 2.4
CMS_2021_I1901295 13000 33 0 33
Ttbar rapidity
ATLAS_2019_I1750330 13000 7.5 0 7.5
ATLAS_2020_I1801434 13000 3.7* +0.20 3.9
ATLAS_2022_I2037744 13000 2.1 +0.40 2.5
ATLAS_2022_I2077575 13000 2.1* -0.30 1.8
CMS_2018_I1703993 13000 69 +10 79
CMS_2021_I1901295 13000 29 +1.0 30
Mean rapidity
ATLAS_2019_I1750330 13000 11 -1.0 10
ATLAS_2020_I1801434 13000 4.8 -0.80 4.0
ATLAS_2022_I2077575 13000 2.2* +0.20 2.4
ttbarej.ht
ATLAS_2022_I2037744 13000 2.4 +1.0 3.4
ttbarej.m
CMS_2021_I1901295 13000 n/a - 22
pT ratio
W to b
ATLAS_2020_I1801434 13000 5.5 -0.70 4.8
pT ratio
W to top
ATLAS_2020_I1801434 13000 5.1 -0.100 5.0
Cross sections
ATLAS_2022_I2037744 13000 10 +2.0 12
ATLAS_2022_I2077575 13000 6.6 -1.7 4.9
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.