Generator

Details for Pythia 6.428 default vs. 345

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (345)
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 0.18 +2.0 2.2
B jet
 η
 CMS_2018_I1703993 13000 160 -130 31
B jet
 pT
 CMS_2018_I1703993 13000 200 -160 36
bjbj.m
 CMS_2018_I1703993 13000 250 -210 44
bjbj.pt
 CMS_2018_I1703993 13000 210 -170 39
bjt.dphi
 ATLAS_2022_I2037744 13000 1.3 +1.3 2.6
ej.pt
 ATLAS_2022_I2037744 13000 3.1 -0.70 2.4
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 6.0 -3.3 2.7
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 6.0 -2.0 4.0
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 6.2 -3.0 3.2
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 4.8 -2.9 1.9
ejej.dphi
 ATLAS_2022_I2037744 13000 0.52 +4.1 4.6
ejets.ht
 CMS_2021_I1901295 13000 30 -19 11
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 6.8 -2.3 4.5
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 4.9 -1.9 3.0
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.15 +0.090 0.24
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.092 -0.018 0.074
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 2.7 -1.7 1.0
Jet pT
 ATLAS_2014_I1304688 7000 28 -13 15
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 1.1 +0.90 2.0
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.23 +0.0100 0.24
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 1.7 +0.30 2.0
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 0.92 +0.48 1.4
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 1.7 +0.30 2.0
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 1.8 +1.3 3.1
Lepton η
 ATLAS_2019_I1759875 13000 40 -10 30
CMS_2018_I1703993 13000 96 -77 19
Lepton pT
 ATLAS_2019_I1759875 13000 53 -12 41
CMS_2018_I1703993 13000 200 -170 35
CMS_2021_I1901295 13000 19 -6.0 13
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 4.7 -1.5 3.2
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.54 +0.010 0.55
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 5.4 -1.4 4.0
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 44 -11 33
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 140 -110 26
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 27 -6.0 21
CMS_2018_I1703993 13000 160 -120 36
Dilepton
 HT
 ATLAS_2019_I1759875 13000 43 -9.0 34
Dilepton
 m
 ATLAS_2019_I1759875 13000 42 -11 31
CMS_2018_I1703993 13000 170 -140 32
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 44 -10 34
CMS_2018_I1703993 13000 160 -130 32
Dilepton
 y
 ATLAS_2019_I1759875 13000 32 -8.0 24
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 18 -16 1.7
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 40 -25 15
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 7.8 -2.8 5.0
CMS_2018_I1703993 13000 170 -140 30
sumpt
 ATLAS_2022_I2152933 13000 21 -16 4.6
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 9.2 -2.0 7.2
ATLAS_2020_I1801434 13000 6.5* -3.0 3.5
ATLAS_2022_I2077575 13000 2.3 -1.00 1.3
Top pT
 ATLAS_2019_I1750330 13000 7.7* -1.0 6.7*
ATLAS_2020_I1801434 13000 5.4 -2.3 3.1
ATLAS_2022_I2037744 13000 2.9 -0.50 2.4*
ATLAS_2022_I2077575 13000 1.7* -0.60 1.1*
CMS_2018_I1703993 13000 190 -140 50
CMS_2021_I1901295 13000 35* -17 18*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 190 -140 49
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 6.2 -1.7 4.5
Top rapidity
 ATLAS_2019_I1750330 13000 9.0 -1.7 7.3
ATLAS_2020_I1801434 13000 6.5 -2.2 4.3
ATLAS_2022_I2037744 13000 1.8* +0.90 2.7*
ATLAS_2022_I2077575 13000 1.8* -0.50 1.3*
CMS_2018_I1703993 13000 160 -110 46
CMS_2021_I1901295 13000 33 -15 18*
topej.dphi
 ATLAS_2022_I2037744 13000 3.5 -1.0 2.5
topej.m
 ATLAS_2022_I2037744 13000 1.8 -0.60 1.2
χ(ttbar)
 ATLAS_2019_I1750330 13000 11 -3.3 7.7
ATLAS_2020_I1801434 13000 5.9 -1.9 4.0
ATLAS_2022_I2077575 13000 2.9* -1.9 1.0*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 9.2 -3.3 5.9
ATLAS_2020_I1801434 13000 5.8 -1.5 4.3
ATLAS_2022_I2037744 13000 1.6 +0.40 2.0
ATLAS_2022_I2077575 13000 2.1 -0.70 1.4
CMS_2018_I1703993 13000 300 -230 73
CMS_2021_I1901295 13000 48 -25 23
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 180 -130 51
CMS_2021_I1901295 13000 35 -15 20
ttbar HT
 ATLAS_2019_I1750330 13000 7.4 -1.6 5.8
ATLAS_2020_I1801434 13000 5.5 -2.1 3.4
ATLAS_2022_I2037744 13000 n/a - n/a
ATLAS_2022_I2077575 13000 1.7 -0.75 0.95
CMS_2021_I1901295 13000 31 -15 16
m(ttbar)
 ATLAS_2019_I1750330 13000 6.0 0 6.0
ATLAS_2020_I1801434 13000 5.5 -2.0 3.5
ATLAS_2022_I2037744 13000 2.2 - n/a
ATLAS_2022_I2077575 13000 1.5* -0.40 1.1*
CMS_2018_I1703993 13000 180 -120 60
CMS_2021_I1901295 13000 48 -24 24*
Pcrossttbar
 ATLAS_2020_I1801434 13000 5.6 -1.9 3.7
ttbar pT
 ATLAS_2019_I1750330 13000 9.0 -2.0 7.0*
ATLAS_2020_I1801434 13000 4.8 -1.1 3.7
ATLAS_2022_I2037744 13000 1.9 +0.40 2.3
ATLAS_2022_I2077575 13000 1.9* -0.60 1.3*
CMS_2018_I1703993 13000 200 -150 50
CMS_2021_I1901295 13000 29 -14 15
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 6.8 -1.6 5.2
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 2.1 -0.80 1.3
CMS_2021_I1901295 13000 48 -23 25
Ttbar rapidity
 ATLAS_2019_I1750330 13000 8.4 -1.8 6.6
ATLAS_2020_I1801434 13000 4.8 -1.1 3.7
ATLAS_2022_I2037744 13000 0.97 +1.1 2.1
ATLAS_2022_I2077575 13000 2.3 -0.90 1.4*
CMS_2018_I1703993 13000 150 -110 41
CMS_2021_I1901295 13000 43 -20 23
Mean rapidity
 ATLAS_2019_I1750330 13000 12 -3.6 8.4
ATLAS_2020_I1801434 13000 4.7 -1.2 3.5
ATLAS_2022_I2077575 13000 2.6 -1.1 1.5*
ttbarej.ht
 ATLAS_2022_I2037744 13000 4.4 -1.0 3.4
ttbarej.m
 CMS_2021_I1901295 13000 36 -19 17
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 7.1 -2.7 4.4
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 6.3 -1.8 4.5
Cross sections
 ATLAS_2022_I2037744 13000 4.7 +6.3 11
ATLAS_2022_I2077575 13000 9.5 -5.1 4.4
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.