Generator

Details for Pythia 8.307 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 1.0 +0.20 1.2*
Underlying event
<pT>
ATLAS_2019_I1736531 13000 3.9* -1.0 2.9*
<pT> vs Nch
CDF_2010_I849042 1960 2.7* -0.20 2.5
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 7.4 +1.1 8.5
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 3.9 +5.0 8.9
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 2.0 +1.0 3.0*
<pT>Z vs Nch
CDF_2010_I849042 1960 1.8 - n/a
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 5.2 -0.60 4.6
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 2.1* -0.80 1.3*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 24 -2.0 22
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 27 -2.0 25
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 27 -3.0 24
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 26 -2.0 24
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 25 -1.0 24
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 24* -1.0 23
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 23* -1.0 22
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 22 0 22
Dilepton
Δη
ATLAS_2016_I1467454 8000 19 -1.0 18
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2019_I1753680 13000 33 -3.0 30*
CMS_2022_I2079374 13000 32 -3.0 29
D0_2010_I871787 1960 1.4* 0 1.4*
LHCB_2012_I1208102 7000 6.9 +0.30 7.2
LHCB_2021_I1990313 13000 16* -5.0 11*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 0.84* -0.13 0.71*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 1.2 -0.53 0.67
CMS_2019_I1753680 13000 2.2 -1.1 1.1
Dilepton
pT
LHCB_2021_I1990313 13000 16 -6.7 9.3
Dilepton
y
LHCB_2021_I1990313 13000 25 -9.0 16
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 13 +6.0 19
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 10 +17 27
Underlying event
Nch
ATLAS_2019_I1736531 13000 2.2* -0.30 1.9*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 0.96 +0.14 1.1
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 1.4 +0.10 1.5
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 0.99 +0.91 1.9
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 1.2 +0.30 1.5
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 1.9 +0.10 2.0
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 1.6 +0.20 1.8
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 8.0 +8.0 16
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 2.8 +2.5 5.3
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 3.0* -0.70 2.3*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 0.57 -0.030 0.54
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.9 +5.4 9.3
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 6.0 +5.0 11
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 4.5 +5.5 10
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.0 +2.4 4.4
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.9 +1.7 4.6
z.m
PHENIX_2019_I1672015 200 210,000,000 -90,000,000 120,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 0 11
CMS_2019_I1753680 13000 23* - n/a
CMS_2022_I2079374 13000 24 -2.0 22
D0_2010_I856972 1960 2.9 +0.30 3.2
PHENIX_2019_I1672015 200 110,000,000 -35,000,000 74,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 0.78* +0.100 0.88*
z.pt_norm
ATLAS_2011_I917931 7000 0.75 -0.050 0.70
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 0.77* - n/a
D0_2010_I856972 1960 1.7 -0.40 1.3
y Z
ATLAS_2016_I1467454 8000 20 -1.0 19
CMS_2019_I1753680 13000 53 -7.0 46
LHCB_2012_I1208102 7000 11 0 11
z.y_norm
CMS_2019_I1753680 13000 0.31 +0.32 0.63

* 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 943 histograms.