Generator / tune

Details for Pythia 6.427 dw 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 1.3* +0.100 1.4*
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 2.6* +0.60 3.2*
Generalized angularities
LHA λ10.5
CMS_2021_I1920187 13000 4.2 0 4.2
Generalized angularities
LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.9 -0.20 1.7
Generalized angularities
Groomed LHA λ10.5
CMS_2021_I1920187 13000 2.3 0 2.3
Generalized angularities
Groomed LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.6 -0.10 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 1.1* +0.30 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 1.8* -0.60 1.2*
Generalized angularities
Groomed multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 0.99* -0.18 0.81*
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 2.0* +0.50 2.5*
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
(pDT)2 λ20
CMS_2021_I1920187 13000 1.9 -0.100 1.8
Generalized angularities
(pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 1.0* 0 1.0*
Generalized angularities
Groomed (pDT)2 λ20
CMS_2021_I1920187 13000 1.9 0 1.9
Generalized angularities
Groomed (pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.96* -0.040 0.92*
Generalized angularities
Thrust λ12
CMS_2021_I1920187 13000 8.4 -0.30 8.1
Generalized angularities
Thrust λ12 (charged only)
CMS_2021_I1920187 13000 2.7 -0.20 2.5
Generalized angularities
Groomed thrust λ12
CMS_2021_I1920187 13000 3.0 +0.10 3.1
Generalized angularities
Groomed thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.5 +0.20 1.7
Generalized angularities
Width λ11
CMS_2021_I1920187 13000 4.1 0 4.1
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 +0.10 2.4
Generalized angularities
Groomed width λ11 (charged only)
CMS_2021_I1920187 13000 1.6 0 1.6
Jet rapidity
ATLAS_2017_I1514251 13000 8.6 +0.80 9.4
ATLAS_2019_I1744201 8000 n/a - 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 53* -17 36*
ATLAS_2020_I1788444 13000 n/a - n/a
ΔrelpT(jets)
CMS_2021_I1866118 13000 13 +1.0 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 2.6* +0.60 3.2*
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 2.1* +0.50 2.6*
pT Z
ATLAS_2020_I1788444 13000 n/a - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
CMS_2020_I1837084 13000 52 -1.0 51
pT(Z) to pT(jet) ratio
ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
pT ratio
CMS_2020_I1776758 13000 1.7* +4.6 6.3
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 7.4 -0.70 6.7
pT balance (jet, Z)
CMS_2021_I1866118 13000 16 -1.0 15
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 4.5 -0.50 4.0
pT balance (dijet, Z)
CMS_2021_I1866118 13000 7.7 -2.3 5.4

* 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.