Generator

Details for Pythia 8.165 default vs. tune-4cx

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (tune-4cx)
Underlying event
 <Nch> vs pTZ
 ATLAS_2019_I1736531 13000 n/a - 1.2*
Underlying event
 <pT>
 ATLAS_2019_I1736531 13000 n/a - 2.3*
<pT> vs Nch
 CDF_2010_I849042 1960 n/a - n/a
Transverse
 <pT> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Toward
 <pT> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Underlying event
 <pT> vs pTZ
 ATLAS_2019_I1736531 13000 n/a - 3.1*
<pT>Z vs Nch
 CDF_2010_I849042 1960 n/a - n/a
Underlying event
 Σ(pT) vs pTZ
 ATLAS_2019_I1736531 13000 n/a - 4.5
Underlying event
 pT spectrum
 ATLAS_2019_I1736531 13000 n/a - 1.1*
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 n/a - 21
CMS_2022_I2079374 13000 n/a - 26*
D0_2010_I871787 1960 n/a - n/a
LHCB_2012_I1208102 7000 6.8 -0.100 6.7
LHCB_2021_I1990313 13000 n/a - 10*
Dilepton
 φ*η ratio
 CMS_2022_I2079374 13000 1.0* - n/a
ll.phiStar_norm
 ATLAS_2019_I1768911 13000 n/a - 1.4
CMS_2019_I1753680 13000 n/a - 2.3
Dilepton
 pT
 LHCB_2021_I1990313 13000 n/a - 9.6
Dilepton
 y
 LHCB_2021_I1990313 13000 n/a - 13
Transverse
 Max(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Toward
 Max(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Underlying event
 Nch
 ATLAS_2019_I1736531 13000 n/a - 1.8*
Away
 <Nch> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Transverse
 <Nch> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
nch-vs-pt-trnsDif
 CDF_2010_I849042 1960 n/a - n/a
TransMAX
 <Nch> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
TransMIN
 <Nch> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Toward
 <Nch> vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Jet Multiplicities
 Jet multiplicity
 CMS_EWK_10_012 7000 13 +2.0 15
Jet Multiplicities
 Ratios of jet multiplicity
 CMS_EWK_10_012 7000 4.8 +0.30 5.1
Underlying event
 Scalar Σ(pT)
 ATLAS_2019_I1736531 13000 n/a - 2.2*
Away
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Transverse
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
sumpt-vs-pt-trnsDif
 CDF_2010_I849042 1960 n/a - n/a
TransMAX
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
TransMIN
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
Toward
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 n/a - n/a
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 n/a - 8.2*
CMS_2022_I2079374 13000 n/a - 19*
D0_2010_I856972 1960 n/a - n/a
PHENIX_2019_I1672015 200 n/a - n/a
z.pt._z.pt
 CMS_2022_I2079374 13000 0.84* - n/a
z.pt_norm
 ATLAS_2011_I917931 7000 1.00 +0.30 1.3
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 n/a - 0.99*
D0_2010_I856972 1960 n/a - n/a
y Z
 ATLAS_2016_I1467454 8000 n/a - n/a
CMS_2019_I1753680 13000 n/a - 34
LHCB_2012_I1208102 7000 11 0 11
z.y_norm
 CMS_2019_I1753680 13000 n/a - 0.36

* 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.