Generator

Details for Pythia 8.307 default vs. default-CD

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (default-CD)
Underlying event
<Nch> vs pTZ
ATLAS_2019_I1736531 13000 1.3 -0.30 1.0
Underlying event
<pT>
ATLAS_2019_I1736531 13000 3.3* +0.60 3.9*
<pT> vs Nch
CDF_2010_I849042 1960 4.6* -1.9 2.7*
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 3.4 +4.0 7.4
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 6.5 -2.6 3.9
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 3.8 -1.8 2.0
<pT>Z vs Nch
CDF_2010_I849042 1960 1.3 +0.50 1.8
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 5.6 -0.40 5.2
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 1.7* +0.40 2.1*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 25 -1.0 24
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 27 0 27
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 26 +1.0 27
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 26 0 26
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 25 0 25
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 24 0 24*
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 23 0 23*
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 22 0 22
Dilepton
Δη
ATLAS_2016_I1467454 8000 18 +1.0 19
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2019_I1753680 13000 30 +3.0 33
CMS_2022_I2079374 13000 31 +1.0 32
D0_2010_I871787 1960 1.3* +0.100 1.4*
LHCB_2012_I1208102 7000 8.4 -1.5 6.9
LHCB_2021_I1990313 13000 13* +3.0 16*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 0.93* -0.090 0.84*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 1.0 +0.20 1.2
CMS_2019_I1753680 13000 1.4 +0.80 2.2
Dilepton
pT
LHCB_2021_I1990313 13000 11 +5.0 16
Dilepton
y
LHCB_2021_I1990313 13000 17 +8.0 25
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 6.2 +6.8 13
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 16 -6.0 10
Underlying event
Nch
ATLAS_2019_I1736531 13000 2.1* +0.10 2.2*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 1.5 -0.54 0.96
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 0.94 +0.46 1.4
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 0.82 +0.17 0.99
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 0.98 +0.22 1.2
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 1.3 +0.60 1.9
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 1.9 -0.30 1.6
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 14 -6.0 8.0
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 4.9 -2.1 2.8
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 2.6* +0.40 3.0*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 0.76 -0.19 0.57
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.7 +1.2 3.9
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 2.8 +3.2 6.0
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.8 +1.7 4.5
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.4 -0.40 2.0
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.3 -0.40 2.9
z.m
PHENIX_2019_I1672015 200 110,000,000 +92,000,000 210,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 0 11
CMS_2019_I1753680 13000 n/a - 23*
CMS_2022_I2079374 13000 23 +1.0 24
D0_2010_I856972 1960 3.1 -0.20 2.9
PHENIX_2019_I1672015 200 89,000,000 +20,000,000 110,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 1.2 -0.42 0.78*
z.pt_norm
ATLAS_2011_I917931 7000 0.64 +0.11 0.75
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 n/a - 0.77*
D0_2010_I856972 1960 1.2 +0.50 1.7
y Z
ATLAS_2016_I1467454 8000 19 +1.0 20
CMS_2019_I1753680 13000 52 +1.0 53
LHCB_2012_I1208102 7000 12 -1.0 11
z.y_norm
CMS_2019_I1753680 13000 0.56 -0.25 0.31

* 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.