Generator / tune

Details for Pythia 8.306 eetherm vs. 8.307

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5% (8.306) Δ χ2+5% (8.307)
Underlying event
 <Nch> vs pTZ
 ATLAS_2019_I1736531 13000 1.4* -0.30 1.1
Underlying event
 <pT>
 ATLAS_2019_I1736531 13000 2.4* +0.10 2.5*
<pT> vs Nch
 CDF_2010_I849042 1960 1.2* - n/a
Transverse
 <pT> vs pTlead
 CDF_2010_I849042 1960 3.4 -1.6 1.8
Toward
 <pT> vs pTlead
 CDF_2010_I849042 1960 3.6 +6.4 10
Underlying event
 <pT> vs pTZ
 ATLAS_2019_I1736531 13000 2.7* 0 2.7
<pT>Z vs Nch
 CDF_2010_I849042 1960 n/a - n/a
Underlying event
 Σ(pT) vs pTZ
 ATLAS_2019_I1736531 13000 5.5 -0.30 5.2
Underlying event
 pT spectrum
 ATLAS_2019_I1736531 13000 2.0* +0.50 2.5*
Jet Substructure
 Splitting scale d0
 ATLAS_2017_I1589844 8000 24 -1.0 23
Jet Substructure
 Splitting scale d1
 ATLAS_2017_I1589844 8000 25* +1.0 26
Jet Substructure
 Splitting scale d2
 ATLAS_2017_I1589844 8000 26* -1.0 25
Jet Substructure
 Splitting scale d3
 ATLAS_2017_I1589844 8000 24* +1.0 25
Jet Substructure
 Splitting scale d4
 ATLAS_2017_I1589844 8000 25 -1.0 24
Jet Substructure
 Splitting scale d5
 ATLAS_2017_I1589844 8000 24 -1.0 23
Jet Substructure
 Splitting scale d6
 ATLAS_2017_I1589844 8000 23* 0 23
Jet Substructure
 Splitting scale d7
 ATLAS_2017_I1589844 8000 22 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* +2.0 34
CMS_2022_I2079374 13000 30 +1.0 31
D0_2010_I871787 1960 1.9* -0.60 1.3*
LHCB_2012_I1208102 7000 8.2 -0.100 8.1
LHCB_2021_I1990313 13000 10* +4.0 14*
Dilepton
 φ*η ratio
 CMS_2022_I2079374 13000 0.96* -0.11 0.85*
ll.phiStar_norm
 ATLAS_2019_I1768911 13000 1.0 -0.040 0.96
CMS_2019_I1753680 13000 4.2 -2.7 1.5
Dilepton
 pT
 LHCB_2021_I1990313 13000 11 +4.0 15
Dilepton
 y
 LHCB_2021_I1990313 13000 16 +7.0 23
Transverse
 Max(pT) vs pTlead
 CDF_2010_I849042 1960 7.8 -2.6 5.2
Toward
 Max(pT) vs pTlead
 CDF_2010_I849042 1960 5.5 +18 23
Underlying event
 Nch
 ATLAS_2019_I1736531 13000 2.1* 0 2.1*
Away
 <Nch> vs pTlead
 CDF_2010_I849042 1960 0.81 +0.29 1.1
Transverse
 <Nch> vs pTlead
 CDF_2010_I849042 1960 1.3 -0.61 0.69
nch-vs-pt-trnsDif
 CDF_2010_I849042 1960 1.5 -0.30 1.2
TransMAX
 <Nch> vs pTlead
 CDF_2010_I849042 1960 1.6 -0.74 0.86
TransMIN
 <Nch> vs pTlead
 CDF_2010_I849042 1960 0.87 +0.83 1.7
Toward
 <Nch> vs pTlead
 CDF_2010_I849042 1960 1.7 -0.20 1.5
Jet Multiplicities
 Jet multiplicity
 CMS_EWK_10_012 7000 14 -7.5 6.5
Jet Multiplicities
 Ratios of jet multiplicity
 CMS_EWK_10_012 7000 4.4 -1.6 2.8
Underlying event
 Scalar Σ(pT)
 ATLAS_2019_I1736531 13000 2.5* +0.30 2.8*
Away
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 0.85 +0.85 1.7
Transverse
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 4.9 -2.3 2.6
sumpt-vs-pt-trnsDif
 CDF_2010_I849042 1960 6.9 -3.7 3.2
TransMAX
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 6.3 -3.5 2.8
TransMIN
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 2.2 +0.30 2.5
Toward
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 3.6 +2.2 5.8
z.m
 PHENIX_2019_I1672015 200 220,000,000 -22,000,000 200,000,000
pT Z
 CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 11 -1.0 10
CMS_2019_I1753680 13000 21* -7.0 14*
CMS_2022_I2079374 13000 24 0 24
D0_2010_I856972 1960 3.2 +0.20 3.4
PHENIX_2019_I1672015 200 140,000,000 -48,000,000 93,000,000
z.pt._z.pt
 CMS_2022_I2079374 13000 1.1* -0.22 0.88*
z.pt_norm
 ATLAS_2011_I917931 7000 0.84 -0.21 0.63
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 0.86* +0.080 0.94*
D0_2010_I856972 1960 1.6 -0.60 1.0
y Z
 ATLAS_2016_I1467454 8000 19 0 19
CMS_2019_I1753680 13000 49 +3.0 52
LHCB_2012_I1208102 7000 11 +1.0 12
z.y_norm
 CMS_2019_I1753680 13000 0.41 +0.15 0.56

* 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.