Generator

Details for Pythia 8.301 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 1.1 0 1.1
Underlying event
<pT>
ATLAS_2019_I1736531 13000 3.5* +0.70 4.2*
<pT> vs Nch
CDF_2010_I849042 1960 n/a - 3.7*
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 3.1 +1.9 5.0
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 4.2 +1.4 5.6
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 2.1 -0.10 2.0
<pT>Z vs Nch
CDF_2010_I849042 1960 n/a - 1.4
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 5.4 -0.30 5.1
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 2.6* +0.10 2.7*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 16* +8.0 24
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 20 +7.0 27
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 18* +7.0 25*
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 17* +9.0 26
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 20* +5.0 25
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 19* +5.0 24
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 18* +5.0 23*
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 18* +4.0 22
Dilepton
Δη
ATLAS_2016_I1467454 8000 18 0 18
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2019_I1753680 13000 32 +1.0 33
CMS_2022_I2079374 13000 31 -1.0 30
D0_2010_I871787 1960 1.6* -0.30 1.3*
LHCB_2012_I1208102 7000 10 -1.7 8.3
LHCB_2021_I1990313 13000 15* +1.0 16*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 0.75* +0.55 1.3*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 0.89 -0.070 0.82
CMS_2019_I1753680 13000 1.2 0 1.2
Dilepton
pT
LHCB_2021_I1990313 13000 14 +2.0 16
Dilepton
y
LHCB_2021_I1990313 13000 22 +4.0 26
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 5.4 +8.6 14
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 4.9 +11 16
Underlying event
Nch
ATLAS_2019_I1736531 13000 2.1* +0.20 2.3*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 0.80 +0.040 0.84
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 1.2 +1.8 3.0
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 1.8 +1.7 3.5
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 1.3 +1.8 3.1
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 1.4 +0.80 2.2
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 1.4 +1.1 2.5
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 9.9 +14 24
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 3.2 +4.9 8.1
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 2.8* +0.20 3.0*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 0.53 +0.44 0.97
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 1.4 +9.6 11
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 4.8 +13 18
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.3 +11 13
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 1.4 +4.1 5.5
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.0 +5.2 7.2
z.m
PHENIX_2019_I1672015 200 160,000,000 -2,400,000 150,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 0 11
CMS_2019_I1753680 13000 24* 0 24*
CMS_2022_I2079374 13000 24 -2.0 22
D0_2010_I856972 1960 3.0 +0.20 3.2
PHENIX_2019_I1672015 200 91,000,000 +1,600,000 92,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 0.92* -0.37 0.55*
z.pt_norm
ATLAS_2011_I917931 7000 0.81 -0.20 0.61
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 0.77* +0.13 0.90*
D0_2010_I856972 1960 1.5 -0.30 1.2
y Z
ATLAS_2016_I1467454 8000 19 0 19
CMS_2019_I1753680 13000 52 +1.0 53
LHCB_2012_I1208102 7000 15 -3.0 12
z.y_norm
CMS_2019_I1753680 13000 0.30 +0.24 0.54

* 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.