Generator / tune

Details for Pythia 8.313 default vs. 8.315

pp/ppbar → Z+Jet


Observable Reference Energy χ2+5% (8.313) Δ χ2+5% (8.315)
Underlying event
 <pT>
 ATLAS_2019_I1736531 13000 - 4.9*
Underlying event
 pT spectrum
 ATLAS_2019_I1736531 13000 - 9.5*
Generalized angularities
 LHA λ10.5
 CMS_2021_I1920187 13000 - 2.9
Generalized angularities
 LHA λ10.5 (charged only)
 CMS_2021_I1920187 13000 - 1.2
Generalized angularities
 Groomed LHA λ10.5
 CMS_2021_I1920187 13000 - 2.0
Generalized angularities
 Groomed LHA λ10.5 (charged only)
 CMS_2021_I1920187 13000 - 1.2
Jet mass
 Jet mass
 CMS_2013_I1224539 7000 - 42
Jet mass
 Filtered jet mass
 CMS_2013_I1224539 7000 - 220
Jet mass
 Pruned jet mass
 CMS_2013_I1224539 7000 - 110
Jet mass
 Trimmed jet mass
 CMS_2013_I1224539 7000 - 290
Generalized angularities
 Multiplicity λ00
 CMS_2021_I1920187 13000 - 1.2*
Generalized angularities
 Groomed multiplicity λ00
 CMS_2021_I1920187 13000 - 1.5*
Generalized angularities
 Multiplicity λ00 (charged only)
 CMS_2021_I1920187 13000 - 1.1*
Generalized angularities
 Groomed multiplicity λ00 (charged only)
 CMS_2021_I1920187 13000 - 1.2*
Jet pT
 ATLAS_2017_I1514251 13000 - n/a
ATLAS_2020_I1788444 13000 - 130
ATLAS_2022_I2077570 13000 - 100
Jet pT ratio
 CMS_2020_I1776758 13000 - 0.60
CMS_2021_I1847230 8000 - n/a
Generalized angularities
 (pDT)2 λ20
 CMS_2021_I1920187 13000 - 1.7
Generalized angularities
 (pDT)2 λ20 (charged only)
 CMS_2021_I1920187 13000 - 1.0*
Generalized angularities
 Groomed (pDT)2 λ20
 CMS_2021_I1920187 13000 - 2.0
Generalized angularities
 Groomed (pDT)2 λ20 (charged only)
 CMS_2021_I1920187 13000 - 1.0*
Generalized angularities
 Thrust λ12
 CMS_2021_I1920187 13000 - 4.4
Generalized angularities
 Thrust λ12 (charged only)
 CMS_2021_I1920187 13000 - 1.1
Generalized angularities
 Groomed thrust λ12
 CMS_2021_I1920187 13000 - 2.9
Generalized angularities
 Groomed thrust λ12 (charged only)
 CMS_2021_I1920187 13000 - 1.3
Generalized angularities
 Width λ11
 CMS_2021_I1920187 13000 - 2.7
Generalized angularities
 Width λ11 (charged only)
 CMS_2021_I1920187 13000 - 0.77
Generalized angularities
 Groomed width λ11
 CMS_2021_I1920187 13000 - 2.2
Generalized angularities
 Groomed width λ11 (charged only)
 CMS_2021_I1920187 13000 - 1.2
Jet rapidity
 ATLAS_2017_I1514251 13000 - 30
ATLAS_2019_I1744201 8000 - 43
ATLAS_2020_I1788444 13000 - 170
Dijet
 ΔR
 ATLAS_2020_I1788444 13000 - 87
CMS_2021_I1847230 8000 - n/a
Dijet
 Δφ
 ATLAS_2017_I1514251 13000 - 38
ATLAS_2020_I1788444 13000 - 75
ΔrelpT(jets)
 CMS_2021_I1866118 13000 - 24
Dijet
 Δy
 ATLAS_2020_I1788444 13000 - 97
Jet mass
 Dijet mass
 ATLAS_2017_I1514251 13000 - n/a
ATLAS_2020_I1788444 13000 - 63
Dijet
 pT
 ATLAS_2020_I1788444 13000 - 78
Dijet
 pT ratio to m
 ATLAS_2020_I1788444 13000 - 96
Underlying event
 Nch
 ATLAS_2019_I1736531 13000 - 1.6*
Jet Multiplicities
 Jet multiplicity
 ATLAS_2017_I1514251 13000 - n/a
ATLAS_2020_I1788444 13000 - 260
ATLAS_2022_I2077570 13000 - n/a
njets_njets
 ATLAS_2017_I1514251 13000 - n/a
Underlying event
 Scalar Σ(pT)
 ATLAS_2019_I1736531 13000 - 2.4*
pT Z
 ATLAS_2020_I1788444 13000 - 150
ATLAS_2022_I2077570 13000 - 60
CMS_2020_I1837084 13000 - 18
pT(Z) to pT(jet) ratio
 ATLAS_2022_I2077570 13000 - n/a
Dilepton
 pT ratio
 CMS_2020_I1776758 13000 - 0.30
y Z
 ATLAS_2020_I1788444 13000 - 140
ΔR (jet, Z)
 ATLAS_2020_I1788444 13000 - 540
ΔRmin (jet, Z)
 ATLAS_2022_I2077570 13000 - 200
Δφ (jet, Z)
 ATLAS_2020_I1788444 13000 - 690
CMS_2021_I1866118 13000 - 23
pT balance (jet, Z)
 CMS_2021_I1866118 13000 - 20
Δy (jet, Z)
 ATLAS_2020_I1788444 13000 - 220
HT(Z+jets)
 ATLAS_2017_I1514251 13000 - n/a
ATLAS_2022_I2077570 13000 - 140
Δφ (dijet, Z)
 CMS_2021_I1866118 13000 - 16
pT balance (dijet, Z)
 CMS_2021_I1866118 13000 - 18

* 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 715 histograms.