Generator

Details for Pythia 8.306 default-CD vs. default-DL

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (default-CD) Δ χ2+5% (default-DL)
Underlying event
<Nch> vs pTZ
ATLAS_2019_I1736531 13000 1.7 -0.20 1.5
Underlying event
<pT>
ATLAS_2019_I1736531 13000 2.5* -0.40 2.1*
<pT> vs Nch
CDF_2010_I849042 1960 n/a - 2.5*
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 5.6 +0.70 6.3
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 7.8 +0.40 8.2
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 3.4 -0.70 2.7
<pT>Z vs Nch
CDF_2010_I849042 1960 2.0 - n/a
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 7.2 +0.20 7.4
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 1.8* -0.40 1.4*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 23 0 23
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 24* +2.0 26*
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 26 +1.0 27
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 23* +3.0 26
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 24* +1.0 25
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 24* 0 24
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 21* +2.0 23
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 21* +1.0 22
Dilepton
Δη
ATLAS_2016_I1467454 8000 19 0 19
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2019_I1753680 13000 26 +2.0 28*
CMS_2022_I2079374 13000 30 +1.0 31
D0_2010_I871787 1960 1.6* -0.20 1.4*
LHCB_2012_I1208102 7000 8.7 +0.20 8.9
LHCB_2021_I1990313 13000 11* -1.5 9.5*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 0.61* +0.12 0.73*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 0.79 +0.41 1.2
CMS_2019_I1753680 13000 0.66 +1.1 1.8
Dilepton
pT
LHCB_2021_I1990313 13000 14* -4.1 9.9*
Dilepton
y
LHCB_2021_I1990313 13000 18 -4.0 14
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 12 +11 23
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 11 +1.0 12
Underlying event
Nch
ATLAS_2019_I1736531 13000 2.2* -0.40 1.8*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 0.91 +0.39 1.3
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 1.1 +0.20 1.3
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 0.94 +0.46 1.4
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 1.2 +0.30 1.5
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 1.7 -0.20 1.5
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 1.8 +1.00 2.8
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 15 -1.0 14
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 5.1 +0.60 5.7
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 2.6* +0.10 2.7*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 1.7 -1.1 0.61
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.8 +1.6 5.4
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 5.3 +8.7 14
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 4.4 +4.5 8.9
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.9 -1.7 2.2
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 5.8 +2.0 7.8
z.m
PHENIX_2019_I1672015 200 180,000,000 +73,000,000 250,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 0 11
CMS_2019_I1753680 13000 20* -8.0 12*
CMS_2022_I2079374 13000 23 0 23
D0_2010_I856972 1960 3.3 -0.100 3.2
PHENIX_2019_I1672015 200 130,000,000 +17,000,000 150,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 0.79* -0.020 0.77*
z.pt_norm
ATLAS_2011_I917931 7000 0.75 -0.23 0.52
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 0.94* +0.26 1.2*
D0_2010_I856972 1960 1.8 -0.60 1.2
y Z
ATLAS_2016_I1467454 8000 20 0 20
CMS_2019_I1753680 13000 45 +2.0 47
LHCB_2012_I1208102 7000 14 -1.0 13
z.y_norm
CMS_2019_I1753680 13000 0.49 +0.48 0.97

* 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.