Generator / tune

Details for Pythia 6.426 default vs. 6.427

pp/ppbar → Jets


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Jet Multiplicities
 R32 vs HT
 ATLAS_2011_I917599 7000 n/a - n/a
CMS_2011_I912560 7000 n/a - n/a
Jet Multiplicities
 R32 vs pT
 ATLAS_2011_I917599 7000 2.7* +0.40 3.1*
Transverse Minor
 CMS_2011_I886332 7000 2.0 -0.10 1.9
Transverse Thrust
 CMS_2011_I886332 7000 2.2 -0.70 1.5
Jets + Veto
 Gap frac. vs Veto scale (FB)
 ATLAS_2011_I917526 7000 3.7 -3.1 0.61
Jets + Veto
 Gap frac. vs Veto scale (LJ)
 ATLAS_2011_I917526 7000 0.36 +0.64 1.0
Jets + Veto
 Gap fraction vs Δy
 CMS_2012_I1102908 7000 n/a - n/a
Jets + Veto
 Gap fraction vs Δy (FB)
 ATLAS_2011_I917526 7000 0.28* -0.070 0.21*
Jets + Veto
 Gap fraction vs Δy (LJ)
 ATLAS_2011_I917526 7000 0.59* -0.29 0.30*
Jets + Veto
 Gap fraction vs pT (FB)
 ATLAS_2011_I917526 7000 n/a - n/a
Jets + Veto
 Gap fraction vs pT (LJ)
 ATLAS_2011_I917526 7000 n/a - n/a
HT(jets)
 ATLAS_2011_I917599 7000 n/a - n/a
ET
 CDF_1994_I374155 1800 n/a - n/a
Jet Shapes
 Jet Angularity
 ATLAS_2012_I1119557 7000 9.9 -2.7 7.2
Jet Charge
 Jet Charge Q
 CMS_2017_I1605749 8000 n/a - n/a
Jet Charge
 Jet Charge Mean
 ATLAS_2015_I1393758 8000 n/a - n/a
Jet Charge
 Jet Charge QL
 CMS_2017_I1605749 8000 n/a - n/a
Jet Charge
 Jet Charge RMS
 ATLAS_2015_I1393758 8000 n/a - n/a
Jet Charge
 Jet Charge QT
 CMS_2017_I1605749 8000 n/a - n/a
Jet Substructure
 C2
 ATLAS_2019_I1724098 13000 n/a - n/a
Jet Substructure
 Splitting scale d12
 ATLAS_2012_I1094564 7000 0.088* +0.012 0.10*
Jet Substructure
 D2
 ATLAS_2019_I1724098 13000 n/a - n/a
Jet Substructure
 Splitting scale d23
 ATLAS_2012_I1094564 7000 1.1* -0.12 0.98*
Jet Substructure
 Energy correlation ECF2
 ATLAS_2019_I1724098 13000 n/a - n/a
Jet Substructure
 Energy correlation ECF3
 ATLAS_2019_I1724098 13000 n/a - n/a
Jet η
 CDF_1994_I374155 1800 n/a - n/a
CMS_2021_I1932460 13000 19 0 19
Generalized angularities
 LHA λ10.5
 ATLAS_2019_I1724098 13000 n/a - n/a
CMS_2021_I1920187 13000 2.3 -0.100 2.2
Generalized angularities
 LHA λ10.5 (charged only)
 CMS_2021_I1920187 13000 1.3* +0.100 1.4*
Generalized angularities
 Groomed LHA λ10.5
 CMS_2021_I1920187 13000 1.6* 0 1.6
Generalized angularities
 Groomed LHA λ10.5 (charged only)
 CMS_2021_I1920187 13000 1.1 0 1.1
Jet mass
 Jet mass
 ATLAS_2012_I1094564 7000 1.5* 0 1.5*
ATLAS_2012_I1119557 7000 11 +4.0 15
Jet mass
 Filtered jet mass
 ATLAS_2012_I1094564 7000 0.69* +0.010 0.70*
Generalized angularities
 Multiplicity λ00
 CMS_2021_I1920187 13000 1.6* -0.20 1.4*
Generalized angularities
 Groomed multiplicity λ00
 CMS_2021_I1920187 13000 1.5* 0 1.5*
Generalized angularities
 Multiplicity λ00 (charged only)
 ATLAS_2019_I1740909 13000 8.8* +2.2 11*
CMS_2021_I1920187 13000 3.5* -1.3 2.2*
Generalized angularities
 Groomed multiplicity λ00 (charged only)
 CMS_2021_I1920187 13000 0.93* +0.17 1.1*
Jet Shapes
 < Nch > (Central)
 ATLAS_2016_I1419070 8000 n/a - n/a
ATLAS_2019_I1740909 13000 n/a - n/a
Jet Substructure
 Subjet multiplicity
 ATLAS_2019_I1724098 13000 n/a - n/a
Jet Shapes
 Jet Planar Flow
 ATLAS_2012_I1119557 7000 23 +4.0 27
Jet pT
 ATLAS_2010_I871366 7000 0.47* -0.39 0.077*
ATLAS_2011_I917599 7000 n/a - n/a
CMS_2011_I902309 7000 n/a - n/a
CMS_2012_I1087342 7000 n/a - n/a
CMS_2021_I1932460 13000 26* +3.0 29*
CMS_2021_I1972986 13000 n/a - n/a
Jet pT ratio
 CMS_2021_I1847230 [8000..13000] 1.3 -0.64 0.66
Generalized angularities
 (pDT)2 λ20
 CMS_2021_I1920187 13000 1.2* -0.100 1.1
Generalized angularities
 (pDT)2 λ20 (charged only)
 CMS_2021_I1920187 13000 1.1* -0.10 1.0*
Generalized angularities
 Groomed (pDT)2 λ20
 CMS_2021_I1920187 13000 0.93* +0.050 0.98
Generalized angularities
 Groomed (pDT)2 λ20 (charged only)
 CMS_2021_I1920187 13000 1.00* +0.10 1.1*
Jet Substructure
 N-subjettiness τ2/τ1
 ATLAS_2012_I1094564 7000 2.0* -0.30 1.7*
Jet Substructure
 N-subjettiness τ3/τ2
 ATLAS_2012_I1094564 7000 0.33* -0.10 0.23*
Generalized angularities
 Thrust λ12
 CMS_2021_I1920187 13000 4.4 -0.20 4.2
Generalized angularities
 Thrust λ12 (charged only)
 CMS_2021_I1920187 13000 2.3* -0.100 2.2*
Generalized angularities
 Groomed thrust λ12
 CMS_2021_I1920187 13000 1.7 -0.100 1.6
Generalized angularities
 Groomed thrust λ12 (charged only)
 CMS_2021_I1920187 13000 1.2 0 1.2
Generalized angularities
 Width λ11
 ATLAS_2012_I1119557 7000 2.7 -0.30 2.4
CMS_2021_I1920187 13000 2.5* -0.20 2.3*
Generalized angularities
 Width λ11 (charged only)
 CMS_2021_I1920187 13000 1.5* 0 1.5*
Generalized angularities
 Groomed width λ11
 CMS_2021_I1920187 13000 1.7 -0.20 1.5
Generalized angularities
 Groomed width λ11 (charged only)
 CMS_2021_I1920187 13000 1.1* +0.100 1.2
Jet Substructure
 Momentum fraction z
 ATLAS_2019_I1740909 13000 4.9* +1.2 6.1*
Jet Shapes
 < Nch Difference > (Central-Fwd)
 ATLAS_2016_I1419070 8000 n/a - n/a
Jet Shapes
 < Nch > (Central+Fwd)
 ATLAS_2016_I1419070 8000 n/a - n/a
Coherence
 α
 CDF_1994_I374155 1800 n/a - n/a
Coherence
 β
 CMS_2013_I1265659 7000 n/a - n/a
Dijet
 χ
 ATLAS_2010_I871366 7000 0.86* - n/a
CMS_2011_I889175 7000 n/a - 0.80*
CMS_2012_I1090423 7000 1.3* - n/a
CMS_2015_I1327224 8000 1.5* +0.70 2.2*
CMS_2017_I1519995 13000 1.5* -0.10 1.4*
Dijet
 ΔR
 CDF_1994_I374155 1800 n/a - n/a
CMS_2021_I1847230 [8000..13000] 0.96 -0.28 0.68
Dijet
 Δφ
 ATLAS_2011_I889546 7000 0.82* +0.14 0.96*
CMS_2011_I885663 7000 1.1* +0.20 1.3*
CMS_2016_I1421646 8000 n/a - n/a
CMS_2019_I1719955 13000 2.0* 0 2.0*
CMS_2021_I1932460 13000 16 -1.0 15
Dijet
 pT balance
 CMS_2021_I1932460 13000 20 -2.0 18
Dijet
 Δy
 CMS_2021_I1932460 13000 15 -1.0 14
CMS_2021_I1963239 2760 n/a - n/a
Dijet
 Δy ratio
 CMS_2021_I1963239 2760 n/a - n/a
Jet mass
 Dijet mass
 ATLAS_2010_I871366 7000 0.13* - n/a
CMS_2013_I1224539 7000 n/a - n/a
Jet mass
 Filtered dijet mass
 CMS_2013_I1224539 7000 23* - n/a
Jet mass
 Pruned dijet mass
 CMS_2013_I1224539 7000 23* -2.0 21*
Jet mass
 Trimmed dijet mass
 CMS_2013_I1224539 7000 8.9* -2.7 6.2*
Jet mass
 Three-jet mass
 D0_2011_I895662 1960 n/a - n/a
Dijet
 ΔS (jet pairs)
 CMS_2021_I1932460 13000 5.2 -1.7 3.5
Jet Shapes
 Differential Jet Shape
 ATLAS_2011_I882984 7000 2.8 -0.30 2.5
CDF_2005_I682179 1960 3.7* - n/a
Jet Shapes
 Integral Jet Shape
 ATLAS_2011_I882984 7000 0.14 -0.030 0.11
CDF_2005_I682179 1960 0.37* - n/a
Lund jet plane
 ln(R/ΔR)
 ATLAS_2020_I1790256 13000 1.7* - n/a
Lund jet plane
 ln(1/z)
 ATLAS_2020_I1790256 13000 1.8* - n/a
Jet Multiplicities
 Jet multiplicity
 ATLAS_2011_I917599 7000 n/a - n/a
Jets + Veto
 Njet vs Δy (FB)
 ATLAS_2011_I917526 7000 2.0* -0.40 1.6*
Jets + Veto
 Njet vs Δy (LJ)
 ATLAS_2011_I917526 7000 2.9* -1.0 1.9*
Jets + Veto
 Njet vs pT (FB)
 ATLAS_2011_I917526 7000 n/a - n/a
Jets + Veto
 Njet vs pT (LJ)
 ATLAS_2011_I917526 7000 n/a - n/a
Jet Multiplicities
 Ratios of jet multiplicity
 ATLAS_2011_I917599 7000 n/a - n/a
Jet Substructure
 Relative pT
 ATLAS_2019_I1740909 13000 0.89* +0.21 1.1*
Jet Substructure
 Radial profile ρ
 ATLAS_2019_I1740909 13000 5.4* -0.40 5.0*
Soft-drop
 Opening angle rg
 ATLAS_2019_I1772062 13000 n/a - n/a
Soft-drop
 Relative jet mass ρ
 ATLAS_2019_I1772062 13000 n/a - n/a
Soft-drop
 Relative pT zg
 ATLAS_2019_I1772062 13000 n/a - n/a
softfrop.zg
 ATLAS_2019_I1772062 13000 n/a - n/a

* 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 3838 histograms.