Generator / tune

Details for Pythia 6.426 p0 vs. 6.427

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 n/a - 23
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 n/a - 28
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 n/a - 32
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 n/a - 35
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 n/a - 37
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 n/a - 39
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 n/a - 41*
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 n/a - 42
Dilepton
Δη
ATLAS_2016_I1467454 8000 n/a - 37*
Dilepton
m
ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
φ*η
CMS_2022_I2079374 13000 26* - n/a
D0_2010_I871787 1960 n/a - 0.63*
LHCB_2012_I1208102 7000 5.9 -0.10 5.8
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 2.0* -0.50 1.5*
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 17 -7.0 10
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 5.1 -1.3 3.8
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 - n/a
CMS_2022_I2079374 13000 18* - n/a
D0_2010_I856972 1960 n/a - 5.1
PHENIX_2019_I1672015 200 n/a - n/a
z.pt._z.pt
CMS_2022_I2079374 13000 2.0* -0.60 1.4*
z.pt_norm
ATLAS_2011_I917931 7000 0.77 +0.11 0.88
D0_2010_I856972 1960 n/a - 0.32
y Z
ATLAS_2016_I1467454 8000 n/a - 40*
LHCB_2012_I1208102 7000 8.6 +0.80 9.4

* 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.