Generator

Details for Pythia 8.165 tune-4cx vs. tune-A2

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (tune-4cx) Δ χ2+5% (tune-A2)
Underlying event
<Nch> vs pTZ
ATLAS_2019_I1736531 13000 1.2* - n/a
Underlying event
<pT>
ATLAS_2019_I1736531 13000 2.3* - n/a
<pT> vs Nch
CDF_2010_I849042 1960 n/a - 1.3*
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 n/a - 9.5
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 n/a - 3.8
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 3.1* - n/a
<pT>Z vs Nch
CDF_2010_I849042 1960 n/a - 4.1
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 4.5 - n/a
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 1.1* - n/a
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 n/a - n/a
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 n/a - n/a
Dilepton
Δη
ATLAS_2016_I1467454 8000 n/a - n/a
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2019_I1753680 13000 21 - n/a
CMS_2022_I2079374 13000 26* +1.0 27*
D0_2010_I871787 1960 n/a - n/a
LHCB_2012_I1208102 7000 6.7 +0.90 7.6
LHCB_2021_I1990313 13000 10* - n/a
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 n/a - n/a
ll.phiStar_norm
ATLAS_2019_I1768911 13000 1.4 - n/a
CMS_2019_I1753680 13000 2.3 - n/a
Dilepton
pT
LHCB_2021_I1990313 13000 9.6 - n/a
Dilepton
y
LHCB_2021_I1990313 13000 13 - n/a
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 23
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 12
Underlying event
Nch
ATLAS_2019_I1736531 13000 1.8* - n/a
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 n/a - 2.2
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 n/a - 1.7
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 n/a - 1.3
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 n/a - 1.9
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 n/a - 1.9
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 n/a - 3.7
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 15 -5.0 10
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 5.1 -1.3 3.8
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 2.2* - n/a
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 0.94
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 4.3
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 n/a - 11
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 7.3
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 1.1
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 n/a - 7.4
z.m
PHENIX_2019_I1672015 200 n/a - n/a
pT Z
CDF_2000_I505738 1800 n/a - n/a
CDF_2012_I1124333 1960 n/a - n/a
CMS_2019_I1753680 13000 8.2* - n/a
CMS_2022_I2079374 13000 19* +1.0 20*
D0_2010_I856972 1960 n/a - n/a
PHENIX_2019_I1672015 200 n/a - n/a
z.pt._z.pt
CMS_2022_I2079374 13000 n/a - n/a
z.pt_norm
ATLAS_2011_I917931 7000 1.3 +0.20 1.5
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 0.99* - n/a
D0_2010_I856972 1960 n/a - n/a
y Z
ATLAS_2016_I1467454 8000 n/a - n/a
CMS_2019_I1753680 13000 34 - n/a
LHCB_2012_I1208102 7000 11 +1.0 12
z.y_norm
CMS_2019_I1753680 13000 0.36 - n/a

* 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 946 histograms.