Generator / tune

Details for Pythia 6.426 357 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 - 21
Jet Substructure
 Splitting scale d1
 ATLAS_2017_I1589844 8000 n/a - 23
Jet Substructure
 Splitting scale d2
 ATLAS_2017_I1589844 8000 n/a - 22
Jet Substructure
 Splitting scale d3
 ATLAS_2017_I1589844 8000 n/a - 22
Jet Substructure
 Splitting scale d4
 ATLAS_2017_I1589844 8000 n/a - 22
Jet Substructure
 Splitting scale d5
 ATLAS_2017_I1589844 8000 n/a - 21*
Jet Substructure
 Splitting scale d6
 ATLAS_2017_I1589844 8000 n/a - 20*
Jet Substructure
 Splitting scale d7
 ATLAS_2017_I1589844 8000 n/a - 20
Dilepton
 Δη
 ATLAS_2016_I1467454 8000 n/a - 38*
Dilepton
 m
 ATLAS_2019_I1725190 13000 n/a - n/a
Dilepton
 φ*η
 CMS_2022_I2079374 13000 n/a - n/a
D0_2010_I871787 1960 n/a - n/a
LHCB_2012_I1208102 7000 7.0 -1.3 5.7
Dilepton
 φ*η ratio
 CMS_2022_I2079374 13000 1.2* 0 1.2*
Jet Multiplicities
 Jet multiplicity
 CMS_EWK_10_012 7000 11 0 11
Jet Multiplicities
 Ratios of jet multiplicity
 CMS_EWK_10_012 7000 4.3 -0.30 4.0
z.m
 PHENIX_2019_I1672015 200 n/a - n/a
pT Z
 CDF_2000_I505738 1800 n/a - 12
CDF_2012_I1124333 1960 n/a - n/a
CMS_2022_I2079374 13000 n/a - n/a
D0_2010_I856972 1960 n/a - n/a
PHENIX_2019_I1672015 200 n/a - n/a
z.pt._z.pt
 CMS_2022_I2079374 13000 0.93* +0.47 1.4*
z.pt_norm
 ATLAS_2011_I917931 7000 0.82 -0.17 0.65
D0_2010_I856972 1960 n/a - n/a
y Z
 ATLAS_2016_I1467454 8000 n/a - 40*
LHCB_2012_I1208102 7000 11 -2.6 8.4

* 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.