Generator

Details for Pythia 6.428 345 vs. 346

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (345) Δ χ2+5% (346)
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 2.2 -2.1 0.11
B jet
 η
 CMS_2018_I1703993 13000 31 +5.0 36
B jet
 pT
 CMS_2018_I1703993 13000 36 +3.0 39
bjbj.m
 CMS_2018_I1703993 13000 44 +7.0 51
bjbj.pt
 CMS_2018_I1703993 13000 39 +2.0 41
bjt.dphi
 ATLAS_2022_I2037744 13000 2.6 -0.70 1.9
ej.pt
 ATLAS_2022_I2037744 13000 2.4 +0.50 2.9
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 2.7 +0.100 2.8
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 4.0 -0.10 3.9
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 3.2 +0.100 3.3
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 1.9 +1.2 3.1
ejej.dphi
 ATLAS_2022_I2037744 13000 4.6 -3.4 1.2
ejets.ht
 CMS_2021_I1901295 13000 11 0 11
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 4.5 -0.60 3.9
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 3.0 -0.20 2.8
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.24 +0.10 0.34
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.074 +0.086 0.16
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 n/a - n/a
CMS_2019_I1764472 13000 1.0 +1.3 2.3
Jet pT
 ATLAS_2014_I1304688 7000 15 0 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 2.0 +0.50 2.5
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.24 +0.11 0.35
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 2.0 +0.10 2.1
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.4 +0.10 1.5
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 2.0 +0.10 2.1
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 3.1 +0.50 3.6
Lepton η
 ATLAS_2019_I1759875 13000 30 0 30
CMS_2018_I1703993 13000 19 +3.0 22
Lepton pT
 ATLAS_2019_I1759875 13000 41 +1.0 42
CMS_2018_I1703993 13000 35 +4.0 39
CMS_2021_I1901295 13000 13 -2.0 11
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 3.2 +0.20 3.4
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.55 +0.12 0.67
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 4.0 -0.10 3.9
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 n/a - n/a
Dilepton
 E
 ATLAS_2019_I1759875 13000 33 +1.0 34
Dilepton
 Δη
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 26 +3.0 29
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 21 +2.0 23
CMS_2018_I1703993 13000 36 +4.0 40
Dilepton
 HT
 ATLAS_2019_I1759875 13000 34 0 34
Dilepton
 m
 ATLAS_2019_I1759875 13000 31 +4.0 35
CMS_2018_I1703993 13000 32 +3.0 35
Dilepton
 pT
 ATLAS_2019_I1718132 13000 n/a - n/a
ATLAS_2019_I1759875 13000 34 +1.0 35
CMS_2018_I1703993 13000 32 +2.0 34
Dilepton
 y
 ATLAS_2019_I1759875 13000 24 +3.0 27*
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 1.7 +0.20 1.9
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 15 0 15
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 5.0 +2.8 7.8
CMS_2018_I1703993 13000 30 0 30
sumpt
 ATLAS_2022_I2152933 13000 4.6 -1.5 3.1
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 7.2 -0.10 7.1
ATLAS_2020_I1801434 13000 3.5 +1.3 4.8
ATLAS_2022_I2077575 13000 1.3 +1.00 2.3*
Top pT
 ATLAS_2019_I1750330 13000 6.7* -0.40 6.3
ATLAS_2020_I1801434 13000 3.1 +2.0 5.1
ATLAS_2022_I2037744 13000 2.4* +0.40 2.8
ATLAS_2022_I2077575 13000 1.1* 0 1.1*
CMS_2018_I1703993 13000 50 +3.0 53
CMS_2021_I1901295 13000 18* 0 18*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 49 +3.0 52
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 4.5 +0.90 5.4
Top rapidity
 ATLAS_2019_I1750330 13000 7.3 -0.50 6.8
ATLAS_2020_I1801434 13000 4.3 +1.5 5.8
ATLAS_2022_I2037744 13000 2.7* -0.80 1.9
ATLAS_2022_I2077575 13000 1.3* +0.100 1.4*
CMS_2018_I1703993 13000 46 +5.0 51
CMS_2021_I1901295 13000 18* -1.0 17
topej.dphi
 ATLAS_2022_I2037744 13000 2.5 +0.20 2.7
topej.m
 ATLAS_2022_I2037744 13000 1.2 +0.60 1.8
χ(ttbar)
 ATLAS_2019_I1750330 13000 7.7 -0.20 7.5
ATLAS_2020_I1801434 13000 4.0 +1.1 5.1
ATLAS_2022_I2077575 13000 1.0* +1.0 2.0*
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 5.9 +0.100 6.0
ATLAS_2020_I1801434 13000 4.3 +2.2 6.5
ATLAS_2022_I2037744 13000 2.0 +0.80 2.8
ATLAS_2022_I2077575 13000 1.4 -0.40 1.0
CMS_2018_I1703993 13000 73 +6.0 79
CMS_2021_I1901295 13000 23 +1.0 24
Δy (ttbar)
 CMS_2016_I1430892 8000 n/a - n/a
CMS_2018_I1703993 13000 51 +8.0 59
CMS_2021_I1901295 13000 20 -1.0 19
ttbar HT
 ATLAS_2019_I1750330 13000 5.8 0 5.8
ATLAS_2020_I1801434 13000 3.4 +0.90 4.3
ATLAS_2022_I2037744 13000 n/a - 2.9
ATLAS_2022_I2077575 13000 0.95 +0.35 1.3*
CMS_2021_I1901295 13000 16 +3.0 19
m(ttbar)
 ATLAS_2019_I1750330 13000 6.0 -0.20 5.8
ATLAS_2020_I1801434 13000 3.5 +2.9 6.4
ATLAS_2022_I2037744 13000 n/a - 2.3
ATLAS_2022_I2077575 13000 1.1* +0.30 1.4*
CMS_2018_I1703993 13000 60 +1.0 61
CMS_2021_I1901295 13000 24* +1.0 25*
Pcrossttbar
 ATLAS_2020_I1801434 13000 3.7 +1.3 5.0
ttbar pT
 ATLAS_2019_I1750330 13000 7.0* -0.20 6.8
ATLAS_2020_I1801434 13000 3.7 +0.90 4.6
ATLAS_2022_I2037744 13000 2.3 +1.7 4.0
ATLAS_2022_I2077575 13000 1.3* 0 1.3*
CMS_2018_I1703993 13000 50 0 50
CMS_2021_I1901295 13000 15 +1.0 16
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 5.2 -0.10 5.1
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 1.3 +1.7 3.0*
CMS_2021_I1901295 13000 25 0 25
Ttbar rapidity
 ATLAS_2019_I1750330 13000 6.6 -0.40 6.2
ATLAS_2020_I1801434 13000 3.7 -0.20 3.5
ATLAS_2022_I2037744 13000 2.1 +1.2 3.3
ATLAS_2022_I2077575 13000 1.4* +0.20 1.6
CMS_2018_I1703993 13000 41 +5.0 46
CMS_2021_I1901295 13000 23 -1.0 22
Mean rapidity
 ATLAS_2019_I1750330 13000 8.4 -0.40 8.0
ATLAS_2020_I1801434 13000 3.5 +0.70 4.2
ATLAS_2022_I2077575 13000 1.5* +0.30 1.8
ttbarej.ht
 ATLAS_2022_I2037744 13000 3.4 -0.30 3.1
ttbarej.m
 CMS_2021_I1901295 13000 17 0 17
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 4.4 +0.100 4.5
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 4.5 +0.80 5.3
Cross sections
 ATLAS_2022_I2037744 13000 11 +5.0 16
ATLAS_2022_I2077575 13000 4.4 -0.20 4.2
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.