Generator

Details for Pythia 6.424 default vs. a

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (default) Δ χ2+5% (a)
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 37 - n/a
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 38* - n/a
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 33 - n/a
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 27* - n/a
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 27* - n/a
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 29* - n/a
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 29* - n/a
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 30* - n/a
Dilepton
Δη
ATLAS_2016_I1467454 8000 31* +2.0 33*
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2022_I2079374 13000 n/a - 42*
D0_2010_I871787 1960 n/a - 18*
LHCB_2012_I1208102 7000 15 +2.0 17
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 n/a - 3.6*
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 180 -84 96
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 34 -13 21
z.m
PHENIX_2019_I1672015 200 n/a - n/a
pT Z
CDF_2000_I505738 1800 n/a - n/a
CDF_2012_I1124333 1960 n/a - 29
CMS_2022_I2079374 13000 n/a - 18*
D0_2010_I856972 1960 n/a - 19
PHENIX_2019_I1672015 200 n/a - n/a
z.pt._z.pt
CMS_2022_I2079374 13000 n/a - 2.1*
z.pt_norm
ATLAS_2011_I917931 7000 9.5 +1.5 11
D0_2010_I856972 1960 n/a - 19
y Z
ATLAS_2016_I1467454 8000 32* +2.0 34*
LHCB_2012_I1208102 7000 8.4 -0.60 7.8

* 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 264 histograms.