Generator

Details for Pythia 6.423 default vs. a

pp/ppbar → Z+Jet


Observable Reference Energy χ2+5% (default) Δ χ2+5% (a)
Underlying event
<pT>
ATLAS_2019_I1736531 13000 2.4* -0.70 1.7*
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 2.6* +0.10 2.7*
Generalized angularities
LHA λ10.5
CMS_2021_I1920187 13000 3.6 +0.70 4.3
Generalized angularities
LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.6 +0.100 1.7
Generalized angularities
Groomed LHA λ10.5
CMS_2021_I1920187 13000 1.9 +0.50 2.4*
Generalized angularities
Groomed LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.2 +0.20 1.4
Jet mass
Jet mass
CMS_2013_I1224539 7000 43* - n/a
Jet mass
Filtered jet mass
CMS_2013_I1224539 7000 65* - n/a
Jet mass
Pruned jet mass
CMS_2013_I1224539 7000 64* - n/a
Jet mass
Trimmed jet mass
CMS_2013_I1224539 7000 50* - n/a
Generalized angularities
Multiplicity λ00
CMS_2021_I1920187 13000 1.4* 0 1.4*
Generalized angularities
Groomed multiplicity λ00
CMS_2021_I1920187 13000 1.1* 0 1.1*
Generalized angularities
Multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.2* +0.20 1.4*
Generalized angularities
Groomed multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 0.64* +0.56 1.2*
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 - n/a
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
(pDT)2 λ20
CMS_2021_I1920187 13000 1.5 +0.50 2.0
Generalized angularities
(pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.95* +0.050 1.0*
Generalized angularities
Groomed (pDT)2 λ20
CMS_2021_I1920187 13000 1.6 +0.30 1.9
Generalized angularities
Groomed (pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.88* +0.030 0.91*
Generalized angularities
Thrust λ12
CMS_2021_I1920187 13000 7.2 +0.60 7.8
Generalized angularities
Thrust λ12 (charged only)
CMS_2021_I1920187 13000 2.4 +0.20 2.6
Generalized angularities
Groomed thrust λ12
CMS_2021_I1920187 13000 2.5 +0.20 2.7
Generalized angularities
Groomed thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.3 +0.20 1.5
Generalized angularities
Width λ11
CMS_2021_I1920187 13000 3.6 +0.50 4.1
Generalized angularities
Width λ11 (charged only)
CMS_2021_I1920187 13000 1.2 +0.20 1.4
Generalized angularities
Groomed width λ11
CMS_2021_I1920187 13000 1.9 +0.30 2.2
Generalized angularities
Groomed width λ11 (charged only)
CMS_2021_I1920187 13000 1.4 +0.10 1.5
Jet rapidity
ATLAS_2017_I1514251 13000 10 -3.3 6.7
ATLAS_2019_I1744201 8000 n/a - n/a
ATLAS_2020_I1788444 13000 n/a - 27
Dijet
ΔR
ATLAS_2020_I1788444 13000 n/a - 8.6
CMS_2021_I1847230 8000 n/a - n/a
Dijet
Δφ
ATLAS_2017_I1514251 13000 13 +1.0 14*
ATLAS_2020_I1788444 13000 n/a - 11
ΔrelpT(jets)
CMS_2021_I1866118 13000 15 +2.0 17
Dijet
Δy
ATLAS_2020_I1788444 13000 n/a - 6.1
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 7.2* -3.1 4.1*
Jet Multiplicities
Jet multiplicity
ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 n/a - 49
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 4.2* -0.70 3.5*
pT Z
ATLAS_2020_I1788444 13000 n/a - n/a
ATLAS_2022_I2077570 13000 66 - n/a
CMS_2020_I1837084 13000 45 +1.0 46
pT(Z) to pT(jet) ratio
ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
pT ratio
CMS_2020_I1776758 13000 1.4 +1.5 2.9*
y Z
ATLAS_2020_I1788444 13000 n/a - 19
ΔR (jet, Z)
ATLAS_2020_I1788444 13000 n/a - 110
ΔRmin (jet, Z)
ATLAS_2022_I2077570 13000 n/a - n/a
Δφ (jet, Z)
ATLAS_2020_I1788444 13000 n/a - 97
CMS_2021_I1866118 13000 5.3 +0.70 6.0
pT balance (jet, Z)
CMS_2021_I1866118 13000 15 +2.0 17
Δy (jet, Z)
ATLAS_2020_I1788444 13000 n/a - 28
HT(Z+jets)
ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2022_I2077570 13000 120 - n/a
Δφ (dijet, Z)
CMS_2021_I1866118 13000 5.0 -1.8 3.2
pT balance (dijet, Z)
CMS_2021_I1866118 13000 6.5 -0.40 6.1

* 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.