Generator / tune

Details for Pythia 6.427 default vs. 6.428

pp/ppbar → Z+Jet


Observable Reference Energy χ2+5% (6.427) Δ χ2+5% (6.428)
Underlying event
<pT>
ATLAS_2019_I1736531 13000 3.5* -1.8 1.7*
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 3.2 -0.80 2.4*
Generalized angularities
LHA λ10.5
CMS_2021_I1920187 13000 4.0 +0.40 4.4
Generalized angularities
LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.8 0 1.8
Generalized angularities
Groomed LHA λ10.5
CMS_2021_I1920187 13000 2.2 +0.20 2.4
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 1.6* -0.30 1.3*
Generalized angularities
Groomed multiplicity λ00
CMS_2021_I1920187 13000 1.4* -0.20 1.2*
Generalized angularities
Multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.9* -0.70 1.2*
Generalized angularities
Groomed multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 0.82* +0.030 0.85*
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 n/a - 2.8*
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
(pDT)2 λ20
CMS_2021_I1920187 13000 1.6 +0.50 2.1
Generalized angularities
(pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.96* +0.030 0.99*
Generalized angularities
Groomed (pDT)2 λ20
CMS_2021_I1920187 13000 1.5 +0.50 2.0
Generalized angularities
Groomed (pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.86* +0.100 0.96*
Generalized angularities
Thrust λ12
CMS_2021_I1920187 13000 8.2 +0.20 8.4
Generalized angularities
Thrust λ12 (charged only)
CMS_2021_I1920187 13000 2.6 +0.40 3.0
Generalized angularities
Groomed thrust λ12
CMS_2021_I1920187 13000 3.0 0 3.0
Generalized angularities
Groomed thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.6 +0.100 1.7
Generalized angularities
Width λ11
CMS_2021_I1920187 13000 4.2 +0.100 4.3
Generalized angularities
Width λ11 (charged only)
CMS_2021_I1920187 13000 1.4 +0.10 1.5
Generalized angularities
Groomed width λ11
CMS_2021_I1920187 13000 2.3 +0.10 2.4
Generalized angularities
Groomed width λ11 (charged only)
CMS_2021_I1920187 13000 1.5 +0.20 1.7
Jet rapidity
ATLAS_2017_I1514251 13000 11 -5.6 5.4
ATLAS_2019_I1744201 8000 8.0* - n/a
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 26* -13 13*
ATLAS_2020_I1788444 13000 n/a - n/a
ΔrelpT(jets)
CMS_2021_I1866118 13000 14 -4.0 10
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 7.4* -3.1 4.3*
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 4.1* -0.40 3.7*
pT Z
ATLAS_2020_I1788444 13000 n/a - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
CMS_2020_I1837084 13000 48 -2.0 46
pT(Z) to pT(jet) ratio
ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
pT ratio
CMS_2020_I1776758 13000 13* -11 1.7*
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 4.8 +2.3 7.1
pT balance (jet, Z)
CMS_2021_I1866118 13000 14 +4.0 18
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 2.7 +1.4 4.1
pT balance (dijet, Z)
CMS_2021_I1866118 13000 3.3 +1.4 4.7

* 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.