Generator / tune

Details for Pythia 8.306 pptherm vs. 8.307

pp/ppbar → Top (tt)


Observable Reference Energy χ2+5% (8.306) Δ χ2+5% (8.307)
Asymmetry
 AC vs Mttbar
 CMS_2016_I1430892 8000 1.0 -0.88 0.12
Asymmetry
 AC vs pTttbar
 CMS_2016_I1430892 8000 2.0 +2.5 4.5
Asymmetry
 AC vs yttbar
 CMS_2016_I1430892 8000 0.91 -0.080 0.83
Asymmetry
 ACl vs Mttbar
 CMS_2016_I1430892 8000 0.72 +0.38 1.1
Asymmetry
 ACl vs pTttbar
 CMS_2016_I1430892 8000 1.0 +1.2 2.2
Asymmetry
 ACl vs yttbar
 CMS_2016_I1430892 8000 2.0 -1.1 0.90
Asymmetry
 Energy asymmetry
 ATLAS_2021_I1941095 13000 0.32 +1.3 1.6
B jet
 η
 CMS_2018_I1703993 13000 18 +6.0 24
B jet
 pT
 CMS_2018_I1703993 13000 23 +5.0 28
bjbj.m
 CMS_2018_I1703993 13000 29 +4.0 33
bjbj.pt
 CMS_2018_I1703993 13000 22 +7.0 29
bjt.dphi
 ATLAS_2022_I2037744 13000 1.1 +1.1 2.2
ej.pt
 ATLAS_2022_I2037744 13000 2.1* -0.10 2.0
pT ratio
 Extra jets
 ATLAS_2020_I1801434 13000 3.3 +0.50 3.8
pT ratio
 Extra to leading jet
 ATLAS_2020_I1801434 13000 3.0 +0.20 3.2
pT ratio
 Extra jet to Top
 ATLAS_2020_I1801434 13000 2.8 +0.50 3.3
ΔR(extra jets)
 ATLAS_2020_I1801434 13000 2.5 +0.20 2.7
ejej.dphi
 ATLAS_2022_I2037744 13000 0.93 -0.50 0.43
ejets.ht
 CMS_2021_I1901295 13000 13 -1.0 12
ΔR(extra, leading jet)
 ATLAS_2020_I1801434 13000 3.8 +0.30 4.1
ΔR(top, extra jet)
 ATLAS_2020_I1801434 13000 4.0* -1.1 2.9
Jets + Veto
 Gap frac. vs Veto scale
 ATLAS_2012_I1094568 7000 0.12 +0.14 0.26
Jets + Veto
 Gap frac. vs scalar veto scale
 ATLAS_2012_I1094568 7000 0.056 +0.027 0.083
Jet mass
 Jet mass
 CMS_2017_I1518399 8000 0.87 +1.4 2.3
CMS_2019_I1764472 13000 0.53 - n/a
Jet pT
 ATLAS_2014_I1304688 7000 6.3 +0.90 7.2
ATLAS_2019_I1718132 13000 6.4 +0.20 6.6*
Dijet
 Δη
 ATLAS_2019_I1718132 13000 7.7 -0.80 6.9
Dijet
 Δφ
 ATLAS_2019_I1718132 13000 9.7 +0.20 9.9
Dijet
 HT
 ATLAS_2019_I1718132 13000 6.0 - n/a
Jet mass
 Dijet mass
 ATLAS_2019_I1718132 13000 9.5 0 9.5
Jet Shapes
 Differential Jet Shape
 ATLAS_2013_I1243871 7000 2.3 -0.30 2.0
Jet Shapes
 Integral Jet Shape
 ATLAS_2013_I1243871 7000 0.30 +0.030 0.33
Identified Particles
 E(KS0)
 ATLAS_2019_I1746286 7000 2.6 +0.50 3.1
Identified Particles
 η(KS0)
 ATLAS_2019_I1746286 7000 1.9 +0.40 2.3
Identified Particles
 pT(KS0)
 ATLAS_2019_I1746286 7000 2.5 +0.90 3.4
Identified Particles
 E(KS0) to E(jet) ratio
 ATLAS_2019_I1746286 7000 3.4 +0.90 4.3
Lepton η
 ATLAS_2019_I1759875 13000 15 0 15
CMS_2018_I1703993 13000 12 +3.0 15
Lepton pT
 ATLAS_2019_I1759875 13000 20 0 20
CMS_2018_I1703993 13000 24 +3.0 27
CMS_2021_I1901295 13000 7.4 +3.6 11
Identified Particles
 E(Λ0)
 ATLAS_2019_I1746286 7000 0.76 +0.15 0.91
Identified Particles
 η(Λ0)
 ATLAS_2019_I1746286 7000 0.026 -0.0030 0.023
Identified Particles
 pT(Λ0)
 ATLAS_2019_I1746286 7000 1.4 +0.10 1.5
Δφ(lepton,jet)
 ATLAS_2019_I1718132 13000 12* +8.0 20*
Dilepton
 E
 ATLAS_2019_I1759875 13000 16 0 16
Dilepton
 Δη
 CMS_2016_I1430892 8000 0.49 -0.050 0.44
CMS_2018_I1703993 13000 16 +6.0 22
Dilepton
 Δφ
 ATLAS_2019_I1718132 13000 11 -1.5 9.5
ATLAS_2019_I1759875 13000 10 +2.0 12
CMS_2018_I1703993 13000 25 +1.0 26
Dilepton
 HT
 ATLAS_2019_I1759875 13000 16 0 16
Dilepton
 m
 ATLAS_2019_I1759875 13000 15 +1.0 16
CMS_2018_I1703993 13000 24 +4.0 28
Dilepton
 pT
 ATLAS_2019_I1718132 13000 8.8 -1.0 7.8
ATLAS_2019_I1759875 13000 16 0 16
CMS_2018_I1703993 13000 18 +6.0 24
Dilepton
 y
 ATLAS_2019_I1759875 13000 12 0 12
ST(leptons, jets)
 ATLAS_2019_I1718132 13000 n/a - n/a
nch
 ATLAS_2022_I2152933 13000 1.9 -1.3 0.65
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 16 +2.0 18
Jet Multiplicities
 Jet multiplicity
 ATLAS_2014_I1304688 7000 n/a - n/a
ATLAS_2020_I1801434 13000 6.2 0 6.2
CMS_2018_I1703993 13000 16 +5.0 21
sumpt
 ATLAS_2022_I2152933 13000 7.5 -1.1 6.4
Jet Multiplicities
 Subjet multiplicity
 ATLAS_2019_I1750330 13000 n/a - n/a
Pouttop
 ATLAS_2019_I1750330 13000 4.4 +0.20 4.6
ATLAS_2020_I1801434 13000 4.5 -0.60 3.9
ATLAS_2022_I2077575 13000 2.8 -0.20 2.6
Top pT
 ATLAS_2019_I1750330 13000 3.9* -0.30 3.6*
ATLAS_2020_I1801434 13000 3.8 -0.20 3.6*
ATLAS_2022_I2037744 13000 1.3* -0.47 0.83*
ATLAS_2022_I2077575 13000 2.2* -0.20 2.0*
CMS_2018_I1703993 13000 30 +4.0 34
CMS_2021_I1901295 13000 15* -1.0 14*
top.pt.ttbarRF
 CMS_2018_I1703993 13000 30 +4.0 34
pT ratio
 Top quarks
 ATLAS_2020_I1801434 13000 4.2 +0.70 4.9
Top rapidity
 ATLAS_2019_I1750330 13000 4.7 -0.10 4.6
ATLAS_2020_I1801434 13000 4.1 +0.90 5.0
ATLAS_2022_I2037744 13000 1.2 -0.23 0.97
ATLAS_2022_I2077575 13000 2.6* -0.10 2.5*
CMS_2018_I1703993 13000 24 +4.0 28
CMS_2021_I1901295 13000 13 0 13
topej.dphi
 ATLAS_2022_I2037744 13000 2.3 +0.10 2.4
topej.m
 ATLAS_2022_I2037744 13000 1.4 +0.80 2.2
χ(ttbar)
 ATLAS_2019_I1750330 13000 5.0 +0.100 5.1
ATLAS_2020_I1801434 13000 4.0 +0.40 4.4
ATLAS_2022_I2077575 13000 4.0* -2.1 1.9
Δφ(ttbar)
 ATLAS_2019_I1750330 13000 5.1 0 5.1
ATLAS_2020_I1801434 13000 5.6 -0.50 5.1
ATLAS_2022_I2037744 13000 n/a - 6.1
ATLAS_2022_I2077575 13000 3.5 -1.1 2.4
CMS_2018_I1703993 13000 41 +4.0 45
CMS_2021_I1901295 13000 21 -1.0 20
Δy (ttbar)
 CMS_2016_I1430892 8000 0.20 +0.020 0.22
CMS_2018_I1703993 13000 25 +3.0 28
CMS_2021_I1901295 13000 14 0 14
ttbar HT
 ATLAS_2019_I1750330 13000 3.7 +0.100 3.8
ATLAS_2020_I1801434 13000 3.4 +0.40 3.8
ATLAS_2022_I2037744 13000 0.55 - n/a
ATLAS_2022_I2077575 13000 4.9* -1.6 3.3*
CMS_2021_I1901295 13000 12 0 12
m(ttbar)
 ATLAS_2019_I1750330 13000 3.4* -0.40 3.0
ATLAS_2020_I1801434 13000 4.0 -0.80 3.2
ATLAS_2022_I2037744 13000 n/a - n/a
ATLAS_2022_I2077575 13000 1.9* +0.30 2.2*
CMS_2018_I1703993 13000 32* -1.0 31
CMS_2021_I1901295 13000 18* +1.0 19
Pcrossttbar
 ATLAS_2020_I1801434 13000 4.6 -0.40 4.2
ttbar pT
 ATLAS_2019_I1750330 13000 4.6 0 4.6
ATLAS_2020_I1801434 13000 4.1* -0.70 3.4
ATLAS_2022_I2037744 13000 1.4 -0.80 0.60
ATLAS_2022_I2077575 13000 2.5* -0.40 2.1*
CMS_2018_I1703993 13000 25 +5.0 30
CMS_2021_I1901295 13000 12 +2.0 14
pT ratio
 ttbar to extra jet
 ATLAS_2020_I1801434 13000 3.0 +0.60 3.6
ttbar.thetaStar
 ATLAS_2022_I2077575 13000 2.4 +0.20 2.6
CMS_2021_I1901295 13000 20 -1.0 19
Ttbar rapidity
 ATLAS_2019_I1750330 13000 4.4 0 4.4
ATLAS_2020_I1801434 13000 2.9* -0.30 2.6
ATLAS_2022_I2037744 13000 0.93 +0.47 1.4
ATLAS_2022_I2077575 13000 4.5* -2.2 2.3
CMS_2018_I1703993 13000 24 +2.0 26
CMS_2021_I1901295 13000 17 0 17
Mean rapidity
 ATLAS_2019_I1750330 13000 6.5 0 6.5
ATLAS_2020_I1801434 13000 4.0 -0.90 3.1
ATLAS_2022_I2077575 13000 4.4* -1.9 2.5
ttbarej.ht
 ATLAS_2022_I2037744 13000 0.74 +0.20 0.94
ttbarej.m
 CMS_2021_I1901295 13000 15 0 15
pT ratio
 W to b
 ATLAS_2020_I1801434 13000 4.1 -0.70 3.4
pT ratio
 W to top
 ATLAS_2020_I1801434 13000 4.0 0 4.0
Cross sections
 ATLAS_2022_I2037744 13000 1.7 -1.5 0.19
ATLAS_2022_I2077575 13000 17 -3.0 14
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.