Generator / tune

Details for Pythia 6.427 d6t 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 2.4* -0.60 1.8*
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 3.4* -0.40 3.0*
Generalized angularities
LHA λ10.5
CMS_2021_I1920187 13000 3.2 0 3.2
Generalized angularities
LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.4 0 1.4
Generalized angularities
Groomed LHA λ10.5
CMS_2021_I1920187 13000 2.0 0 2.0
Generalized angularities
Groomed LHA λ10.5 (charged only)
CMS_2021_I1920187 13000 1.2 +0.10 1.3
Jet mass
Jet mass
CMS_2013_I1224539 7000 37* - n/a
Jet mass
Filtered jet mass
CMS_2013_I1224539 7000 56* - n/a
Jet mass
Pruned jet mass
CMS_2013_I1224539 7000 68* - 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* -0.20 1.3*
Generalized angularities
Groomed multiplicity λ00
CMS_2021_I1920187 13000 1.0* +0.10 1.1*
Generalized angularities
Multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.9* 0 1.9*
Generalized angularities
Groomed multiplicity λ00 (charged only)
CMS_2021_I1920187 13000 1.3* -0.20 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 0.38 +0.62 1.0
CMS_2021_I1847230 8000 n/a - n/a
Generalized angularities
(pDT)2 λ20
CMS_2021_I1920187 13000 1.3 +0.100 1.4
Generalized angularities
(pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.86* +0.090 0.95*
Generalized angularities
Groomed (pDT)2 λ20
CMS_2021_I1920187 13000 1.4 +0.10 1.5
Generalized angularities
Groomed (pDT)2 λ20 (charged only)
CMS_2021_I1920187 13000 0.88* +0.010 0.89*
Generalized angularities
Thrust λ12
CMS_2021_I1920187 13000 5.8 +0.10 5.9
Generalized angularities
Thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.5 +0.20 1.7
Generalized angularities
Groomed thrust λ12
CMS_2021_I1920187 13000 2.6 -0.10 2.5
Generalized angularities
Groomed thrust λ12 (charged only)
CMS_2021_I1920187 13000 1.3 +0.100 1.4
Generalized angularities
Width λ11
CMS_2021_I1920187 13000 3.0 +0.20 3.2
Generalized angularities
Width λ11 (charged only)
CMS_2021_I1920187 13000 1.0 +0.20 1.2
Generalized angularities
Groomed width λ11
CMS_2021_I1920187 13000 2.0 +0.20 2.2
Generalized angularities
Groomed width λ11 (charged only)
CMS_2021_I1920187 13000 1.2 +0.10 1.3
Jet rapidity
ATLAS_2017_I1514251 13000 2.7 +0.90 3.6
ATLAS_2019_I1744201 8000 49* - n/a
ATLAS_2020_I1788444 13000 19 - n/a
Dijet
ΔR
ATLAS_2020_I1788444 13000 12 - n/a
CMS_2021_I1847230 8000 n/a - n/a
Dijet
Δφ
ATLAS_2017_I1514251 13000 23* -1.0 22
ATLAS_2020_I1788444 13000 14 - n/a
ΔrelpT(jets)
CMS_2021_I1866118 13000 12 +2.0 14
Dijet
Δy
ATLAS_2020_I1788444 13000 21 - 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 17 - n/a
Underlying event
Nch
ATLAS_2019_I1736531 13000 1.0* +0.30 1.3*
Jet Multiplicities
Jet multiplicity
ATLAS_2017_I1514251 13000 n/a - n/a
ATLAS_2020_I1788444 13000 58 - 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 1.7* 0 1.7*
pT Z
ATLAS_2020_I1788444 13000 25* - n/a
ATLAS_2022_I2077570 13000 n/a - n/a
CMS_2020_I1837084 13000 48 +3.0 51
pT(Z) to pT(jet) ratio
ATLAS_2022_I2077570 13000 n/a - n/a
Dilepton
pT ratio
CMS_2020_I1776758 13000 2.0* -0.20 1.8
y Z
ATLAS_2020_I1788444 13000 17 - n/a
ΔR (jet, Z)
ATLAS_2020_I1788444 13000 150 - n/a
ΔRmin (jet, Z)
ATLAS_2022_I2077570 13000 n/a - n/a
Δφ (jet, Z)
ATLAS_2020_I1788444 13000 140 - n/a
CMS_2021_I1866118 13000 10 -2.7 7.3
pT balance (jet, Z)
CMS_2021_I1866118 13000 23 -5.0 18
Δy (jet, Z)
ATLAS_2020_I1788444 13000 23 - 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 4.7 -0.80 3.9
pT balance (dijet, Z)
CMS_2021_I1866118 13000 8.5 -1.2 7.3

* 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.