Generator

Details for Pythia 8.303 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 0.90 +0.20 1.1
Underlying event
<pT>
ATLAS_2019_I1736531 13000 3.5* -1.1 2.4*
<pT> vs Nch
CDF_2010_I849042 1960 3.2* -1.2 2.0*
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 5.5 +0.40 5.9
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 6.2 -0.70 5.5
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 2.5 -0.10 2.4
<pT>Z vs Nch
CDF_2010_I849042 1960 1.5 -0.20 1.3
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 6.6 -1.0 5.6
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 2.2* -0.40 1.8*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 24 0 24
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 27 0 27
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 28 0 28
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 26 +1.0 27
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 25 +1.0 26
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 24 +1.0 25
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 23* +1.0 24*
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 23 0 23
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 -6.0 24
CMS_2022_I2079374 13000 30 +1.0 31
D0_2010_I871787 1960 1.6* +0.100 1.7*
LHCB_2012_I1208102 7000 9.8 +0.20 10
LHCB_2021_I1990313 13000 14* -3.0 11*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 0.75* -0.26 0.49*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 0.99 -0.020 0.97
CMS_2019_I1753680 13000 1.3 -0.58 0.72
Dilepton
pT
LHCB_2021_I1990313 13000 13 -3.0 10
Dilepton
y
LHCB_2021_I1990313 13000 21 -3.0 18
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 8.5 +1.5 10
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 12 -1.0 11
Underlying event
Nch
ATLAS_2019_I1736531 13000 2.3* -0.30 2.0*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 0.74 +0.12 0.86
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 1.2 0 1.2
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 0.74 +0.66 1.4
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 1.0 +0.40 1.4
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 1.8 -0.60 1.2
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 1.6 +1.7 3.3
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 16 -4.0 12
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 4.5 -0.30 4.2
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 2.5* 0 2.5*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 0.55 +0.65 1.2
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 4.8 -2.1 2.7
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 4.6 +0.40 5.0
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 4.7 -1.3 3.4
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.4 -2.3 1.1
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 3.9 +3.8 7.7
z.m
PHENIX_2019_I1672015 200 150,000,000 +40,000,000 190,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 0 11
CMS_2019_I1753680 13000 18* - n/a
CMS_2022_I2079374 13000 22 +2.0 24
D0_2010_I856972 1960 3.0 +0.20 3.2
PHENIX_2019_I1672015 200 65,000,000 +31,000,000 96,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 0.88* +0.040 0.92*
z.pt_norm
ATLAS_2011_I917931 7000 0.64 +0.030 0.67
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 1.0* - n/a
D0_2010_I856972 1960 1.7 -0.30 1.4
y Z
ATLAS_2016_I1467454 8000 19 0 19
CMS_2019_I1753680 13000 49 -4.0 45
LHCB_2012_I1208102 7000 13 0 13
z.y_norm
CMS_2019_I1753680 13000 0.45 +0.060 0.51

* 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.