Generator

Details for Pythia 8.301 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 0.94 +0.16 1.1
Underlying event
<pT>
ATLAS_2019_I1736531 13000 2.8* +0.70 3.5*
<pT> vs Nch
CDF_2010_I849042 1960 1.6* - n/a
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 2.8 +0.30 3.1
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 7.1 -2.9 4.2
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 2.9* -0.80 2.1
<pT>Z vs Nch
CDF_2010_I849042 1960 n/a - n/a
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 6.3 -0.90 5.4
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 1.9* +0.70 2.6*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 24 -8.0 16*
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 28 -8.0 20
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 27 -9.0 18*
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 26 -9.0 17*
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 25 -5.0 20*
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 25 -6.0 19*
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 24 -6.0 18*
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 23 -5.0 18*
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 32 0 32
CMS_2022_I2079374 13000 30 +1.0 31
D0_2010_I871787 1960 1.6* 0 1.6*
LHCB_2012_I1208102 7000 8.5 +1.5 10
LHCB_2021_I1990313 13000 12* +3.0 15*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 0.99 -0.24 0.75*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 1.0 -0.11 0.89
CMS_2019_I1753680 13000 1.2 0 1.2
Dilepton
pT
LHCB_2021_I1990313 13000 13* +1.0 14
Dilepton
y
LHCB_2021_I1990313 13000 18 +4.0 22
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 6.6 -1.2 5.4
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 28 -23 4.9
Underlying event
Nch
ATLAS_2019_I1736531 13000 2.1* 0 2.1*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 1.0 -0.20 0.80
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 0.63 +0.57 1.2
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 0.81 +0.99 1.8
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 0.65 +0.65 1.3
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 1.2 +0.20 1.4
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 2.4 -1.0 1.4
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 12 -2.1 9.9
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 4.8 -1.6 3.2
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 2.6* +0.20 2.8*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 1.4 -0.87 0.53
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.0 -1.6 1.4
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 3.0 +1.8 4.8
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.0 -0.70 2.3
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.0 -0.60 1.4
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 5.9 -3.9 2.0
z.m
PHENIX_2019_I1672015 200 260,000,000 -110,000,000 160,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 0 11
CMS_2019_I1753680 13000 19* +5.0 24*
CMS_2022_I2079374 13000 22 +2.0 24
D0_2010_I856972 1960 3.0 0 3.0
PHENIX_2019_I1672015 200 120,000,000 -29,000,000 91,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 1.0* -0.080 0.92*
z.pt_norm
ATLAS_2011_I917931 7000 0.56 +0.25 0.81
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 1.2* -0.43 0.77*
D0_2010_I856972 1960 1.7 -0.20 1.5
y Z
ATLAS_2016_I1467454 8000 20 -1.0 19
CMS_2019_I1753680 13000 53 -1.0 52
LHCB_2012_I1208102 7000 12 +3.0 15
z.y_norm
CMS_2019_I1753680 13000 0.19 +0.11 0.30

* 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.