Generator / tune

Details for Pythia 6.427 a 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 1.7* +0.30 2.0*
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 2.7* -0.20 2.5*
Generalized angularities
LHA λ10.5
CMS_2021_I1920187 13000 3.9 0 3.9
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 2.1 -0.20 1.9
Generalized angularities
Groomed LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.5 -0.10 1.4
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 1.2* +0.50 1.7*
Generalized angularities
Groomed multiplicity λ00
CMS_2021_I1920187 13000 1.2* +0.10 1.3*
Generalized angularities
Multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.9* -0.80 1.1*
Generalized angularities
Groomed multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.1* -0.26 0.84*
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 1.1* - n/a
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
(pDT)2 λ20
CMS_2021_I1920187 13000 1.8 +0.20 2.0
Generalized angularities
(pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.99* +0.010 1.0*
Generalized angularities
Groomed (pDT)2 λ20
CMS_2021_I1920187 13000 1.6 +0.20 1.8
Generalized angularities
Groomed (pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.89* +0.060 0.95*
Generalized angularities
Thrust λ12
CMS_2021_I1920187 13000 8.0 -0.40 7.6
Generalized angularities
Thrust λ12 (charged only)
CMS_2021_I1920187 13000 2.7 +0.100 2.8
Generalized angularities
Groomed thrust λ12
CMS_2021_I1920187 13000 2.8 -0.20 2.6
Generalized angularities
Groomed thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.5 +0.10 1.6
Generalized angularities
Width λ11
CMS_2021_I1920187 13000 4.0* -0.10 3.9
Generalized angularities
Width λ11 (charged only)
CMS_2021_I1920187 13000 1.4 0 1.4
Generalized angularities
Groomed width λ11
CMS_2021_I1920187 13000 2.1 -0.10 2.0
Generalized angularities
Groomed width λ11 (charged only)
CMS_2021_I1920187 13000 1.6 -0.10 1.5
Jet rapidity
ATLAS_2017_I1514251 13000 8.9 +2.1 11
ATLAS_2019_I1744201 8000 n/a - n/a
ATLAS_2020_I1788444 13000 19 - n/a
Dijet
ΔR
ATLAS_2020_I1788444 13000 7.8 - n/a
CMS_2021_I1847230 8000 n/a - n/a
Dijet
Δφ
ATLAS_2017_I1514251 13000 23* -3.0 20*
ATLAS_2020_I1788444 13000 7.9 - n/a
ΔrelpT(jets)
CMS_2021_I1866118 13000 11 0 11
Dijet
Δy
ATLAS_2020_I1788444 13000 5.5 - 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 4.1* +0.90 5.0*
Jet Multiplicities
Jet multiplicity
ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 48 - 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 3.5* +1.4 4.9*
pT Z
ATLAS_2020_I1788444 13000 10.0* - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
CMS_2020_I1837084 13000 47 -1.0 46
pT(Z) to pT(jet) ratio
ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
pT ratio
CMS_2020_I1776758 13000 1.8 +3.0 4.8*
y Z
ATLAS_2020_I1788444 13000 12 - n/a
ΔR (jet, Z)
ATLAS_2020_I1788444 13000 40 - 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 8.4 -3.4 5.0
pT balance (jet, Z)
CMS_2021_I1866118 13000 24 -11 13
Δy (jet, Z)
ATLAS_2020_I1788444 13000 15 - 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 4.1 -1.2 2.9
pT balance (dijet, Z)
CMS_2021_I1866118 13000 5.4 -0.80 4.6

* 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.