Generator

Details for Pythia 8.244 default-CD vs. default-DL

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (default-CD) Δ χ2+5% (default-DL)
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 2.0 -1.4 0.60
B jet
 η
 CMS_2018_I1703993 13000 17 +2.0 19
B jet
 pT
 CMS_2018_I1703993 13000 20 +1.0 21
bjbj.m
 CMS_2018_I1703993 13000 22 +3.0 25
bjbj.pt
 CMS_2018_I1703993 13000 21 +2.0 23
bjt.dphi
 ATLAS_2022_I2037744 13000 1.1 +0.90 2.0
ej.pt
 ATLAS_2022_I2037744 13000 2.3* -0.50 1.8*
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 1.8 +0.20 2.0
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 2.0 0 2.0
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 2.1 0 2.1
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 2.0 0 2.0
ejej.dphi
 ATLAS_2022_I2037744 13000 0.62 +0.58 1.2
ejets.ht
 CMS_2021_I1901295 13000 11 +1.0 12
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 3.4 -0.60 2.8
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 2.1 -0.20 1.9
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.14 +0.100 0.24
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.075 -0.043 0.032
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.55 -0.49 0.059
Jet pT
 ATLAS_2014_I1304688 7000 7.0 -0.50 6.5
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 2.0 -0.40 1.6
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.29 -0.050 0.24
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.8 0 1.8
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.2 -0.100 1.1
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 1.9 -0.100 1.8
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 2.6 +0.40 3.0
Lepton η
 ATLAS_2019_I1759875 13000 14 -2.0 12
CMS_2018_I1703993 13000 11 0 11
Lepton pT
 ATLAS_2019_I1759875 13000 20 -2.0 18
CMS_2018_I1703993 13000 19 +3.0 22
CMS_2021_I1901295 13000 6.1 +0.20 6.3
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 4.4 +0.40 4.8
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.80 -0.12 0.68
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 5.6 0 5.6
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 16 0 16
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 13 +2.0 15
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 13 -3.0 10
CMS_2018_I1703993 13000 21 +2.0 23
Dilepton
 HT
 ATLAS_2019_I1759875 13000 16 -1.0 15
Dilepton
 m
 ATLAS_2019_I1759875 13000 15 -2.0 13
CMS_2018_I1703993 13000 17 +4.0 21
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 18 -4.0 14
CMS_2018_I1703993 13000 18 +1.0 19
Dilepton
 y
 ATLAS_2019_I1759875 13000 13* -2.0 11
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 2.0 +1.0 3.0
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 12 +4.0 16
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.0 -0.40 3.6
CMS_2018_I1703993 13000 14 +2.0 16
sumpt
 ATLAS_2022_I2152933 13000 2.4 +1.3 3.7
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 4.3 0 4.3
ATLAS_2020_I1801434 13000 2.7 -0.60 2.1
ATLAS_2022_I2077575 13000 2.4 +2.4 4.8*
Top pT
 ATLAS_2019_I1750330 13000 3.4* +0.40 3.8*
ATLAS_2020_I1801434 13000 2.9 -0.80 2.1
ATLAS_2022_I2037744 13000 0.30 +0.35 0.65
ATLAS_2022_I2077575 13000 2.0* +0.50 2.5*
CMS_2018_I1703993 13000 27 +2.0 29
CMS_2021_I1901295 13000 12* 0 12*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 26 +2.0 28
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 2.5 +0.40 2.9
Top rapidity
 ATLAS_2019_I1750330 13000 4.1 +0.20 4.3
ATLAS_2020_I1801434 13000 2.9 +0.30 3.2
ATLAS_2022_I2037744 13000 0.86* +0.090 0.95*
ATLAS_2022_I2077575 13000 2.3* +0.30 2.6*
CMS_2018_I1703993 13000 23 +1.0 24
CMS_2021_I1901295 13000 11 0 11
topej.dphi
 ATLAS_2022_I2037744 13000 2.8 -0.60 2.2*
topej.m
 ATLAS_2022_I2037744 13000 1.7 -0.20 1.5
χ(ttbar)
 ATLAS_2019_I1750330 13000 4.2 +1.0 5.2
ATLAS_2020_I1801434 13000 3.1 -0.10 3.0
ATLAS_2022_I2077575 13000 2.0 +2.5 4.5*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 4.5 +0.40 4.9
ATLAS_2020_I1801434 13000 3.8 -1.6 2.2
ATLAS_2022_I2037744 13000 0.81 -0.37 0.44
ATLAS_2022_I2077575 13000 2.8 +0.90 3.7
CMS_2018_I1703993 13000 35 +4.0 39
CMS_2021_I1901295 13000 19 +1.0 20
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 23 +2.0 25
CMS_2021_I1901295 13000 11 0 11
ttbar HT
 ATLAS_2019_I1750330 13000 3.4 +0.20 3.6
ATLAS_2020_I1801434 13000 2.8 -0.100 2.7
ATLAS_2022_I2037744 13000 0.66 +0.17 0.83
ATLAS_2022_I2077575 13000 3.8* -0.60 3.2
CMS_2021_I1901295 13000 11 0 11
m(ttbar)
 ATLAS_2019_I1750330 13000 2.5* +0.90 3.4*
ATLAS_2020_I1801434 13000 3.3 -1.1 2.2
ATLAS_2022_I2037744 13000 n/a - n/a
ATLAS_2022_I2077575 13000 1.8* +0.50 2.3*
CMS_2018_I1703993 13000 21 +3.0 24
CMS_2021_I1901295 13000 15 +2.0 17*
Pcrossttbar
 ATLAS_2020_I1801434 13000 2.8 +0.30 3.1
ttbar pT
 ATLAS_2019_I1750330 13000 4.0 +0.40 4.4
ATLAS_2020_I1801434 13000 2.6 -0.20 2.4*
ATLAS_2022_I2037744 13000 0.59 +0.40 0.99
ATLAS_2022_I2077575 13000 2.3* +0.40 2.7*
CMS_2018_I1703993 13000 23 +4.0 27
CMS_2021_I1901295 13000 12 -1.0 11
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 2.0 +0.50 2.5
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 2.3 +2.8 5.1*
CMS_2021_I1901295 13000 16 +1.0 17
Ttbar rapidity
 ATLAS_2019_I1750330 13000 3.6 +0.50 4.1
ATLAS_2020_I1801434 13000 1.7* +0.60 2.3*
ATLAS_2022_I2037744 13000 0.51 +1.5 2.0
ATLAS_2022_I2077575 13000 4.5* -1.5 3.0
CMS_2018_I1703993 13000 23 0 23
CMS_2021_I1901295 13000 14 +1.0 15
Mean rapidity
 ATLAS_2019_I1750330 13000 5.6 +0.10 5.7
ATLAS_2020_I1801434 13000 2.7 +0.100 2.8
ATLAS_2022_I2077575 13000 4.2* -1.1 3.1
ttbarej.ht
 ATLAS_2022_I2037744 13000 2.1 -1.4 0.69
ttbarej.m
 CMS_2021_I1901295 13000 11 +1.0 12
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 2.4 -0.10 2.3
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 2.5 +0.30 2.8
Cross sections
 ATLAS_2022_I2037744 13000 0.39 +1.2 1.6
ATLAS_2022_I2077575 13000 16 +3.0 19
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.