Generator / tune

Details for Pythia 6.426 default vs. 6.427

pp/ppbar → Z+Jet


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Underlying event
 <pT>
 ATLAS_2019_I1736531 13000 1.9* +1.6 3.5*
Underlying event
 pT spectrum
 ATLAS_2019_I1736531 13000 2.9* +0.30 3.2
Generalized angularities
 LHA λ10.5
 CMS_2021_I1920187 13000 4.1 -0.100 4.0
Generalized angularities
 LHA λ10.5 (charged only)
 CMS_2021_I1920187 13000 1.9 -0.100 1.8
Generalized angularities
 Groomed LHA λ10.5
 CMS_2021_I1920187 13000 2.3 -0.100 2.2
Generalized angularities
 Groomed LHA λ10.5 (charged only)
 CMS_2021_I1920187 13000 1.5 0 1.5
Jet mass
 Jet mass
 CMS_2013_I1224539 7000 n/a - n/a
Jet mass
 Filtered jet mass
 CMS_2013_I1224539 7000 n/a - n/a
Jet mass
 Pruned jet mass
 CMS_2013_I1224539 7000 n/a - n/a
Jet mass
 Trimmed jet mass
 CMS_2013_I1224539 7000 n/a - n/a
Generalized angularities
 Multiplicity λ00
 CMS_2021_I1920187 13000 1.3* +0.30 1.6*
Generalized angularities
 Groomed multiplicity λ00
 CMS_2021_I1920187 13000 1.2* +0.20 1.4*
Generalized angularities
 Multiplicity λ00 (charged only)
 CMS_2021_I1920187 13000 1.4* +0.50 1.9*
Generalized angularities
 Groomed multiplicity λ00 (charged only)
 CMS_2021_I1920187 13000 0.92* -0.10 0.82*
Jet pT
 ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 n/a - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
Jet pT ratio
 CMS_2020_I1776758 13000 1.2* - n/a
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
 (pDT)2 λ20
 CMS_2021_I1920187 13000 1.8 -0.20 1.6
Generalized angularities
 (pDT)2 λ20 (charged only)
 CMS_2021_I1920187 13000 1.1* -0.14 0.96*
Generalized angularities
 Groomed (pDT)2 λ20
 CMS_2021_I1920187 13000 1.8 -0.30 1.5
Generalized angularities
 Groomed (pDT)2 λ20 (charged only)
 CMS_2021_I1920187 13000 0.94* -0.080 0.86*
Generalized angularities
 Thrust λ12
 CMS_2021_I1920187 13000 8.3 -0.10 8.2
Generalized angularities
 Thrust λ12 (charged only)
 CMS_2021_I1920187 13000 2.7 -0.10 2.6
Generalized angularities
 Groomed thrust λ12
 CMS_2021_I1920187 13000 3.1 -0.10 3.0
Generalized angularities
 Groomed thrust λ12 (charged only)
 CMS_2021_I1920187 13000 1.6 0 1.6
Generalized angularities
 Width λ11
 CMS_2021_I1920187 13000 4.1 +0.10 4.2
Generalized angularities
 Width λ11 (charged only)
 CMS_2021_I1920187 13000 1.5 -0.10 1.4
Generalized angularities
 Groomed width λ11
 CMS_2021_I1920187 13000 2.3 0 2.3
Generalized angularities
 Groomed width λ11 (charged only)
 CMS_2021_I1920187 13000 1.6 -0.10 1.5
Jet rapidity
 ATLAS_2017_I1514251 13000 11 0 11
ATLAS_2019_I1744201 8000 n/a - 8.0*
ATLAS_2020_I1788444 13000 n/a - n/a
Dijet
 ΔR
 ATLAS_2020_I1788444 13000 n/a - n/a
CMS_2021_I1847230 8000 n/a - n/a
Dijet
 Δφ
 ATLAS_2017_I1514251 13000 21* +5.0 26*
ATLAS_2020_I1788444 13000 n/a - n/a
ΔrelpT(jets)
 CMS_2021_I1866118 13000 25 -11 14
Dijet
 Δy
 ATLAS_2020_I1788444 13000 n/a - n/a
Jet mass
 Dijet mass
 ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 n/a - n/a
Dijet
 pT
 ATLAS_2020_I1788444 13000 n/a - n/a
Dijet
 pT ratio to m
 ATLAS_2020_I1788444 13000 n/a - n/a
Underlying event
 Nch
 ATLAS_2019_I1736531 13000 3.5* +3.9 7.4*
Jet Multiplicities
 Jet multiplicity
 ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 n/a - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
njets_njets
 ATLAS_2017_I1514251 13000 n/a - n/a
Underlying event
 Scalar Σ(pT)
 ATLAS_2019_I1736531 13000 3.3* +0.80 4.1*
pT Z
 ATLAS_2020_I1788444 13000 n/a - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
CMS_2020_I1837084 13000 46 +2.0 48
pT(Z) to pT(jet) ratio
 ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
 pT ratio
 CMS_2020_I1776758 13000 2.7* +10 13*
y Z
 ATLAS_2020_I1788444 13000 n/a - n/a
ΔR (jet, Z)
 ATLAS_2020_I1788444 13000 n/a - n/a
ΔRmin (jet, Z)
 ATLAS_2022_I2077570 13000 n/a - n/a
Δφ (jet, Z)
 ATLAS_2020_I1788444 13000 n/a - n/a
CMS_2021_I1866118 13000 7.9 -3.1 4.8
pT balance (jet, Z)
 CMS_2021_I1866118 13000 23 -9.0 14
Δy (jet, Z)
 ATLAS_2020_I1788444 13000 n/a - n/a
HT(Z+jets)
 ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
Δφ (dijet, Z)
 CMS_2021_I1866118 13000 3.7 -1.0 2.7
pT balance (dijet, Z)
 CMS_2021_I1866118 13000 5.1 -1.8 3.3

* 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 1430 histograms.