Generator

Details for Pythia 8.230 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 0.52 +0.27 0.79
B jet
 η
 CMS_2018_I1703993 13000 16 +3.0 19
B jet
 pT
 CMS_2018_I1703993 13000 20 +3.0 23
bjbj.m
 CMS_2018_I1703993 13000 26 0 26
bjbj.pt
 CMS_2018_I1703993 13000 20 +4.0 24
bjt.dphi
 ATLAS_2022_I2037744 13000 0.77 -0.090 0.68
ej.pt
 ATLAS_2022_I2037744 13000 2.2 +0.30 2.5
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 2.1 +1.9 4.0
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 2.1 +1.2 3.3
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 1.8 +1.3 3.1
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 1.7* +0.50 2.2
ejej.dphi
 ATLAS_2022_I2037744 13000 1.3 +0.100 1.4
ejets.ht
 CMS_2021_I1901295 13000 10.0 -0.70 9.3
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 3.3 -0.40 2.9
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 1.9 +0.80 2.7
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.24 -0.11 0.13
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.12 -0.10 0.018
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 0.028 +0.18 0.21
Jet pT
 ATLAS_2014_I1304688 7000 6.6 +0.70 7.3
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 2.3 -0.20 2.1
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.31 +0.020 0.33
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 2.2 0 2.2
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.4 +0.30 1.7
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 2.0 +0.20 2.2
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 3.1 +0.60 3.7
Lepton η
 ATLAS_2019_I1759875 13000 12 +4.0 16
CMS_2018_I1703993 13000 11 +1.0 12
Lepton pT
 ATLAS_2019_I1759875 13000 17 +5.0 22
CMS_2018_I1703993 13000 19 +4.0 23
CMS_2021_I1901295 13000 6.9 -1.4 5.5
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 4.7 -0.70 4.0
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.73 -0.100 0.63
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 5.9 -0.50 5.4
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 14 +4.0 18
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 15 +3.0 18
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 9.1 +4.9 14*
CMS_2018_I1703993 13000 21 +6.0 27
Dilepton
 HT
 ATLAS_2019_I1759875 13000 14 +4.0 18
Dilepton
 m
 ATLAS_2019_I1759875 13000 13 +5.0 18
CMS_2018_I1703993 13000 19 +5.0 24
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 13 +7.0 20
CMS_2018_I1703993 13000 17 +7.0 24
Dilepton
 y
 ATLAS_2019_I1759875 13000 10 +3.0 13
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 3.7 -2.8 0.94
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 13 -2.0 11
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 4.4 -0.20 4.2
CMS_2018_I1703993 13000 14 +4.0 18
sumpt
 ATLAS_2022_I2152933 13000 6.3 -2.5 3.8
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 4.3 -0.100 4.2
ATLAS_2020_I1801434 13000 3.7 -0.60 3.1
ATLAS_2022_I2077575 13000 2.4 +1.6 4.0*
Top pT
 ATLAS_2019_I1750330 13000 3.9* -0.30 3.6*
ATLAS_2020_I1801434 13000 2.4 +0.10 2.5
ATLAS_2022_I2037744 13000 1.6* -0.20 1.4
ATLAS_2022_I2077575 13000 2.0* +0.40 2.4*
CMS_2018_I1703993 13000 28 0 28
CMS_2021_I1901295 13000 12* -1.0 11*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 25 +3.0 28
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 3.8 -0.30 3.5
Top rapidity
 ATLAS_2019_I1750330 13000 4.2 -0.40 3.8
ATLAS_2020_I1801434 13000 3.2 0 3.2
ATLAS_2022_I2037744 13000 0.92 -0.37 0.55
ATLAS_2022_I2077575 13000 2.3* +0.40 2.7*
CMS_2018_I1703993 13000 23 +1.0 24
CMS_2021_I1901295 13000 11 0 11
topej.dphi
 ATLAS_2022_I2037744 13000 2.3 -0.20 2.1
topej.m
 ATLAS_2022_I2037744 13000 1.8 -0.30 1.5
χ(ttbar)
 ATLAS_2019_I1750330 13000 4.4 +0.30 4.7
ATLAS_2020_I1801434 13000 3.0 -0.20 2.8
ATLAS_2022_I2077575 13000 3.5* +0.60 4.1*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 5.2 -0.60 4.6
ATLAS_2020_I1801434 13000 3.7 -0.70 3.0
ATLAS_2022_I2037744 13000 2.6 -0.30 2.3
ATLAS_2022_I2077575 13000 4.1 -1.2 2.9
CMS_2018_I1703993 13000 38 +2.0 40
CMS_2021_I1901295 13000 18 +1.0 19
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 25 +2.0 27
CMS_2021_I1901295 13000 11 -1.0 10
ttbar HT
 ATLAS_2019_I1750330 13000 3.8* -0.40 3.4
ATLAS_2020_I1801434 13000 2.7 +0.30 3.0
ATLAS_2022_I2037744 13000 n/a - 1.2
ATLAS_2022_I2077575 13000 3.8* +0.10 3.9*
CMS_2021_I1901295 13000 10 0 10
m(ttbar)
 ATLAS_2019_I1750330 13000 3.1* -0.20 2.9
ATLAS_2020_I1801434 13000 2.3 +0.50 2.8
ATLAS_2022_I2037744 13000 0.58 - n/a
ATLAS_2022_I2077575 13000 2.2* 0 2.2*
CMS_2018_I1703993 13000 25 +1.0 26
CMS_2021_I1901295 13000 16* -2.0 14
Pcrossttbar
 ATLAS_2020_I1801434 13000 2.7 +0.20 2.9
ttbar pT
 ATLAS_2019_I1750330 13000 4.1 0 4.1
ATLAS_2020_I1801434 13000 3.4 -0.70 2.7
ATLAS_2022_I2037744 13000 1.7 -1.3 0.39
ATLAS_2022_I2077575 13000 2.4* -0.10 2.3*
CMS_2018_I1703993 13000 24 +1.0 25
CMS_2021_I1901295 13000 11 -1.0 10*
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 2.8 +0.20 3.0
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 3.6* +1.00 4.6*
CMS_2021_I1901295 13000 16 -1.0 15
Ttbar rapidity
 ATLAS_2019_I1750330 13000 4.1 0 4.1
ATLAS_2020_I1801434 13000 1.9* +0.70 2.6
ATLAS_2022_I2037744 13000 0.90 +0.090 0.99
ATLAS_2022_I2077575 13000 4.3* -1.1 3.2
CMS_2018_I1703993 13000 24 +1.0 25
CMS_2021_I1901295 13000 15 -1.0 14
Mean rapidity
 ATLAS_2019_I1750330 13000 6.0 0 6.0
ATLAS_2020_I1801434 13000 2.6 0 2.6
ATLAS_2022_I2077575 13000 4.3* -0.50 3.8
ttbarej.ht
 ATLAS_2022_I2037744 13000 1.1 +0.70 1.8
ttbarej.m
 CMS_2021_I1901295 13000 n/a - n/a
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 2.7 +0.40 3.1
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 2.8 +0.50 3.3
Cross sections
 ATLAS_2022_I2037744 13000 1.1 -0.97 0.13
ATLAS_2022_I2077575 13000 15 +2.0 17
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.