Generator / tune

Details for Pythia 8.306 pptherm 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 5.3 +1.0 6.3
Underlying event
<pT>
ATLAS_2019_I1736531 13000 5.3* -0.100 5.2*
<pT> vs Nch
CDF_2010_I849042 1960 1.6* +0.50 2.1*
Transverse
<pT> vs pTlead
CDF_2010_I849042 1960 3.3 +2.8 6.1
Toward
<pT> vs pTlead
CDF_2010_I849042 1960 9.2 -6.4 2.8
Underlying event
<pT> vs pTZ
ATLAS_2019_I1736531 13000 4.9 -0.20 4.7
<pT>Z vs Nch
CDF_2010_I849042 1960 n/a - n/a
Underlying event
Σ(pT) vs pTZ
ATLAS_2019_I1736531 13000 16 +2.0 18
Underlying event
pT spectrum
ATLAS_2019_I1736531 13000 3.5* -0.50 3.0*
Jet Substructure
Splitting scale d0
ATLAS_2017_I1589844 8000 24 +1.0 25
Jet Substructure
Splitting scale d1
ATLAS_2017_I1589844 8000 32 +2.0 34
Jet Substructure
Splitting scale d2
ATLAS_2017_I1589844 8000 38 +1.0 39
Jet Substructure
Splitting scale d3
ATLAS_2017_I1589844 8000 40 0 40
Jet Substructure
Splitting scale d4
ATLAS_2017_I1589844 8000 39* +1.0 40
Jet Substructure
Splitting scale d5
ATLAS_2017_I1589844 8000 39* +2.0 41
Jet Substructure
Splitting scale d6
ATLAS_2017_I1589844 8000 40* +2.0 42
Jet Substructure
Splitting scale d7
ATLAS_2017_I1589844 8000 38* +3.0 41
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 33 +1.0 34
CMS_2022_I2079374 13000 31 -2.0 29
D0_2010_I871787 1960 1.7* -0.100 1.6*
LHCB_2012_I1208102 7000 8.1 +1.3 9.4
LHCB_2021_I1990313 13000 14* 0 14*
Dilepton
φ*η ratio
CMS_2022_I2079374 13000 1.4* -0.20 1.2*
ll.phiStar_norm
ATLAS_2019_I1768911 13000 1.2 0 1.2
CMS_2019_I1753680 13000 1.4 +0.30 1.7
Dilepton
pT
LHCB_2021_I1990313 13000 15 0 15
Dilepton
y
LHCB_2021_I1990313 13000 24 -3.0 21
Transverse
Max(pT) vs pTlead
CDF_2010_I849042 1960 8.8 +0.80 9.6
Toward
Max(pT) vs pTlead
CDF_2010_I849042 1960 27 -19 7.7
Underlying event
Nch
ATLAS_2019_I1736531 13000 3.6* +0.80 4.4*
Away
<Nch> vs pTlead
CDF_2010_I849042 1960 1.3 -0.46 0.84
Transverse
<Nch> vs pTlead
CDF_2010_I849042 1960 5.1 -1.1 4.0
nch-vs-pt-trnsDif
CDF_2010_I849042 1960 3.3 -1.1 2.2
TransMAX
<Nch> vs pTlead
CDF_2010_I849042 1960 4.6 -1.8 2.8
TransMIN
<Nch> vs pTlead
CDF_2010_I849042 1960 4.9 0 4.9
Toward
<Nch> vs pTlead
CDF_2010_I849042 1960 5.2 -0.80 4.4
Jet Multiplicities
Jet multiplicity
CMS_EWK_10_012 7000 7.6 +8.4 16
Jet Multiplicities
Ratios of jet multiplicity
CMS_EWK_10_012 7000 3.0 +2.4 5.4
Underlying event
Scalar Σ(pT)
ATLAS_2019_I1736531 13000 7.4* +0.50 7.9*
Away
Σ(pT) vs pTlead
CDF_2010_I849042 1960 2.7 -0.10 2.6
Transverse
Σ(pT) vs pTlead
CDF_2010_I849042 1960 12 -1.0 11
sumpt-vs-pt-trnsDif
CDF_2010_I849042 1960 14 -6.1 7.9
TransMAX
Σ(pT) vs pTlead
CDF_2010_I849042 1960 13 -3.2 9.8
TransMIN
Σ(pT) vs pTlead
CDF_2010_I849042 1960 13 +1.0 14
Toward
Σ(pT) vs pTlead
CDF_2010_I849042 1960 18 -8.3 9.7
z.m
PHENIX_2019_I1672015 200 260,000,000 -32,000,000 230,000,000
pT Z
CDF_2000_I505738 1800 11 0 11
CDF_2012_I1124333 1960 10 +1.0 11
CMS_2019_I1753680 13000 23* -1.0 22*
CMS_2022_I2079374 13000 25 -2.0 23
D0_2010_I856972 1960 3.1 -0.10 3.0
PHENIX_2019_I1672015 200 83,000,000 +6,200,000 89,000,000
z.pt._z.pt
CMS_2022_I2079374 13000 1.3* -0.43 0.87*
z.pt_norm
ATLAS_2011_I917931 7000 0.88 -0.26 0.62
ATLAS_2019_I1768911 13000 n/a - n/a
CMS_2019_I1753680 13000 1.1* -0.12 0.98*
D0_2010_I856972 1960 1.4 +0.20 1.6
y Z
ATLAS_2016_I1467454 8000 19 -1.0 18
CMS_2019_I1753680 13000 54 -2.0 52
LHCB_2012_I1208102 7000 13 0 13
z.y_norm
CMS_2019_I1753680 13000 0.75 -0.11 0.64

* 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.