Generator / tune

Details for Pythia 6.426 a vs. 6.427

pp/ppbar → Z+Jet


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Underlying event
<pT>
ATLAS_2019_I1736531 13000 1.7* 0 1.7*
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 3.0* -0.30 2.7*
Generalized angularities
LHA λ10.5
CMS_2021_I1920187 13000 4.0 -0.10 3.9
Generalized angularities
LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.6 +0.20 1.8
Generalized angularities
Groomed LHA λ10.5
CMS_2021_I1920187 13000 2.2 -0.10 2.1
Generalized angularities
Groomed LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.3 +0.20 1.5
Jet mass
Jet mass
CMS_2013_I1224539 7000 41* - n/a
Jet mass
Filtered jet mass
CMS_2013_I1224539 7000 n/a - n/a
Jet mass
Pruned jet mass
CMS_2013_I1224539 7000 56* - n/a
Jet mass
Trimmed jet mass
CMS_2013_I1224539 7000 n/a - n/a
Generalized angularities
Multiplicity λ00
CMS_2021_I1920187 13000 1.5* -0.30 1.2*
Generalized angularities
Groomed multiplicity λ00
CMS_2021_I1920187 13000 1.5* -0.30 1.2*
Generalized angularities
Multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.4* +0.50 1.9*
Generalized angularities
Groomed multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.0* +0.10 1.1*
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 2.8* -1.7 1.1*
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
(pDT)2 λ20
CMS_2021_I1920187 13000 1.8 0 1.8
Generalized angularities
(pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 1.0* -0.010 0.99*
Generalized angularities
Groomed (pDT)2 λ20
CMS_2021_I1920187 13000 1.8 -0.20 1.6
Generalized angularities
Groomed (pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.90* -0.010 0.89*
Generalized angularities
Thrust λ12
CMS_2021_I1920187 13000 8.3 -0.30 8.0
Generalized angularities
Thrust λ12 (charged only)
CMS_2021_I1920187 13000 2.5 +0.20 2.7
Generalized angularities
Groomed thrust λ12
CMS_2021_I1920187 13000 2.9 -0.10 2.8
Generalized angularities
Groomed thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.4 +0.10 1.5
Generalized angularities
Width λ11
CMS_2021_I1920187 13000 3.9 +0.10 4.0*
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 2.2 -0.10 2.1
Generalized angularities
Groomed width λ11 (charged only)
CMS_2021_I1920187 13000 1.5 +0.10 1.6
Jet rapidity
ATLAS_2017_I1514251 13000 9.9 -1.0 8.9
ATLAS_2019_I1744201 8000 26* - n/a
ATLAS_2020_I1788444 13000 n/a - 19
Dijet
ΔR
ATLAS_2020_I1788444 13000 n/a - 7.8
CMS_2021_I1847230 8000 n/a - n/a
Dijet
Δφ
ATLAS_2017_I1514251 13000 17 +6.0 23*
ATLAS_2020_I1788444 13000 n/a - 7.9
ΔrelpT(jets)
CMS_2021_I1866118 13000 16 -5.0 11
Dijet
Δy
ATLAS_2020_I1788444 13000 n/a - 5.5
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 4.2* -0.10 4.1*
Jet Multiplicities
Jet multiplicity
ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 n/a - 48
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 3.6* -0.10 3.5*
pT Z
ATLAS_2020_I1788444 13000 n/a - 10.0*
ATLAS_2022_I2077570 13000 n/a - n/a
CMS_2020_I1837084 13000 44 +3.0 47
pT(Z) to pT(jet) ratio
ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
pT ratio
CMS_2020_I1776758 13000 1.1* +0.70 1.8
y Z
ATLAS_2020_I1788444 13000 n/a - 12
ΔR (jet, Z)
ATLAS_2020_I1788444 13000 n/a - 40
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 4.7 +3.7 8.4
pT balance (jet, Z)
CMS_2021_I1866118 13000 19 +5.0 24
Δy (jet, Z)
ATLAS_2020_I1788444 13000 n/a - 15
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 2.6 +1.5 4.1
pT balance (dijet, Z)
CMS_2021_I1866118 13000 3.2 +2.2 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.