Generator / tune

Details for Pythia 8.315 tune-A2m

pp/ppbar → Z (Drell-Yan)


Observable Reference Energy χ2+5%
Underlying event
 <Nch> vs pTZ
 ATLAS_2019_I1736531 13000 1.7
Underlying event
 <pT>
 ATLAS_2019_I1736531 13000 5.3*
<pT> vs Nch
 CDF_2010_I849042 1960 2.8
Transverse
 <pT> vs pTlead
 CDF_2010_I849042 1960 5.4
Toward
 <pT> vs pTlead
 CDF_2010_I849042 1960 5.8
Underlying event
 <pT> vs pTZ
 ATLAS_2019_I1736531 13000 2.6
<pT>Z vs Nch
 CDF_2010_I849042 1960 0.59
Underlying event
 Σ(pT) vs pTZ
 ATLAS_2019_I1736531 13000 7.1
Underlying event
 pT spectrum
 ATLAS_2019_I1736531 13000 7.3
Jet Substructure
 Splitting scale d0
 ATLAS_2017_I1589844 8000 20
Jet Substructure
 Splitting scale d1
 ATLAS_2017_I1589844 8000 21
Jet Substructure
 Splitting scale d2
 ATLAS_2017_I1589844 8000 17
Jet Substructure
 Splitting scale d3
 ATLAS_2017_I1589844 8000 16
Jet Substructure
 Splitting scale d4
 ATLAS_2017_I1589844 8000 17
Jet Substructure
 Splitting scale d5
 ATLAS_2017_I1589844 8000 17
Jet Substructure
 Splitting scale d6
 ATLAS_2017_I1589844 8000 17
Jet Substructure
 Splitting scale d7
 ATLAS_2017_I1589844 8000 17
Dilepton
 Δη
 ATLAS_2016_I1467454 8000 15
Dilepton
 m
 ATLAS_2019_I1725190 13000 n/a
Dilepton
 φ*η
 CMS_2019_I1753680 13000 29
CMS_2022_I2079374 13000 21
D0_2010_I871787 1960 2.4*
LHCB_2012_I1208102 7000 5.8
LHCB_2021_I1990313 13000 12*
Dilepton
 φ*η ratio
 CMS_2022_I2079374 13000 0.68
ll.phiStar_norm
 ATLAS_2019_I1768911 13000 0.96
CMS_2019_I1753680 13000 2.9
Dilepton
 pT
 LHCB_2021_I1990313 13000 13
Dilepton
 y
 LHCB_2021_I1990313 13000 15
Transverse
 Max(pT) vs pTlead
 CDF_2010_I849042 1960 9.0
Toward
 Max(pT) vs pTlead
 CDF_2010_I849042 1960 11
Underlying event
 Nch
 ATLAS_2019_I1736531 13000 4.1
Away
 <Nch> vs pTlead
 CDF_2010_I849042 1960 3.4
Transverse
 <Nch> vs pTlead
 CDF_2010_I849042 1960 2.8
nch-vs-pt-trnsDif
 CDF_2010_I849042 1960 2.2
TransMAX
 <Nch> vs pTlead
 CDF_2010_I849042 1960 3.2
TransMIN
 <Nch> vs pTlead
 CDF_2010_I849042 1960 4.8
Toward
 <Nch> vs pTlead
 CDF_2010_I849042 1960 3.0
Jet Multiplicities
 Jet multiplicity
 CMS_EWK_10_012 7000 6.1
Jet Multiplicities
 Ratios of jet multiplicity
 CMS_EWK_10_012 7000 3.0
Underlying event
 Scalar Σ(pT)
 ATLAS_2019_I1736531 13000 5.7
Away
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 0.85
Transverse
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 2.6
sumpt-vs-pt-trnsDif
 CDF_2010_I849042 1960 4.2
TransMAX
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 3.1
TransMIN
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 2.5
Toward
 Σ(pT) vs pTlead
 CDF_2010_I849042 1960 1.6
z.m
 PHENIX_2019_I1672015 200 830,000,000
pT Z
 CDF_2000_I505738 1800 13
CDF_2012_I1124333 1960 13
CMS_2019_I1753680 13000 25*
CMS_2022_I2079374 13000 18
D0_2010_I856972 1960 4.3
PHENIX_2019_I1672015 200 420,000,000
z.pt._z.pt
 CMS_2022_I2079374 13000 0.88
z.pt_norm
 ATLAS_2011_I917931 7000 0.92
ATLAS_2019_I1768911 13000 n/a
CMS_2019_I1753680 13000 1.3
D0_2010_I856972 1960 1.2
y Z
 ATLAS_2016_I1467454 8000 16
CMS_2019_I1753680 13000 30
LHCB_2012_I1208102 7000 7.9
z.y_norm
 CMS_2019_I1753680 13000 1.0

* 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 473 histograms.