Generator / tune

Details for Pythia 6.426 a vs. 6.427

pp/ppbar → Soft QCD (inelastic)


Observable Reference Energy χ2+5% (6.426) Δ χ2+5% (6.427)
Identified Particles : pT
D0
ALICE_2017_I1511870 7000 n/a - 7.9
ALICE_2022_I1868463 13000 n/a - n/a
LHCB_2013_I1218996 7000 120 +20 140
Identified Particles : pT
D0
ALICE_2017_I1511870 7000 n/a - n/a
Identified Particles : σ
D0
ALICE_2017_I1511870 7000 n/a - n/a
Identified Particles : pT
D+
ALICE_2017_I1511870 7000 8.2 - n/a
LHCB_2013_I1218996 7000 69 0 69*
Identified Particles : σ
D+
ALICE_2017_I1511870 7000 n/a - n/a
Identified Particles : Ratios
D+/D0 vs pT
ALICE_2017_I1511870 7000 1.5 - n/a
Identified Particles : pT
Ds+
ALICE_2017_I1511870 7000 1.8 +1.2 3.0
LHCB_2013_I1218996 7000 13* -3.0 10*
Identified Particles : σ
Ds+
ALICE_2017_I1511870 7000 n/a - n/a
Identified Particles : Ratios
Ds+/D0 vs pT
ALICE_2017_I1511870 7000 0.83 +0.27 1.1
Identified Particles : Ratios
Ds+/D+ vs pT
ALICE_2017_I1511870 7000 1.00 -0.94 0.056
Identified Particles : pT
D*+
ALICE_2017_I1511870 7000 n/a - 5.0
LHCB_2013_I1218996 7000 32 +15 47
Identified Particles : σ
D*+
ALICE_2017_I1511870 7000 n/a - n/a
Identified Particles : Ratios
D*+/D0 vs pT
ALICE_2017_I1511870 7000 n/a - 0.24
K0S2pippim_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
K0S
ALICE_2011_I881474 900 22 -5.0 17
ALICE_2020_I1797443 13000 n/a - n/a
LHCB_2010_I865584 900 4.8 0 4.8
STAR_2006_I722757 200 n/a - n/a
Identified Particles : Ratios
K-/K+ vs |y|
LHCB_2012_I1119400 [900..7000] 1.2 0 1.2
Identified Particles : Ratios
(K-+K+)/(π-+π+) vs pT
ALICE_2015_I1357424 7000 8.6 +0.100 8.7
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : Ratios
(K-+K+)/(π-+π+) vs |y|
LHCB_2012_I1119400 [900..7000] 6.7 -0.10 6.6
Identified Particles : pT
K-
ALICE_2011_I885104 900 8.0 -0.90 7.1
STAR_2006_I722757 200 24 -6.0 18
STAR_2008_I793126 200 2.3 +1.1 3.4
Identified Particles : pT
K+
ALICE_2011_I885104 900 7.5 0 7.5
STAR_2006_I722757 200 16 0 16
STAR_2008_I793126 200 3.9 -1.2 2.7
Identified Particles : pT
K+ + K-
ALICE_2015_I1357424 7000 17 0 17
ALICE_2020_I1797443 13000 n/a - n/a
Kst0Kst0b2pippim_pt
ALICE_2020_I1797443 13000 n/a - n/a
Kst0Kst0b_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : Ratios
Λ/K0S vs pT
ALICE_2011_I881474 900 27 +15 42
ALICE_2020_I1797443 13000 n/a - n/a
LLbar_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
Λ
ALICE_2011_I881474 900 34 0 34
STAR_2006_I722757 200 n/a - n/a
Identified Particles : pT
Λc+
ALICE_2022_I1868463 13000 n/a - n/a
LHCB_2013_I1218996 7000 260 - n/a
Identified Particles : Ratios
Λc+/D0 vs pT
ALICE_2022_I1868463 13000 n/a - n/a
Identified Particles : Ratios
Λc+ from Σc0,+,++/Λc+ vs pT
ALICE_2022_I1868463 13000 n/a - n/a
Identified Particles : Ratios
Λbar/K0S vs pT
LHCB_2011_I917009 [900..7000] 5.1 -0.80 4.3
Identified Particles : Ratios
Λbar/K0S vs |y|
LHCB_2011_I917009 [900..7000] 4.4 -0.30 4.1
Identified Particles : Ratios
Λbar/K0S vs |Δy|
LHCB_2011_I917009 [900..7000] 6.1 -0.30 5.8
Identified Particles : Ratios
Λbar/Λ vs pT
LHCB_2011_I917009 [900..7000] 3.5 +1.7 5.2
STAR_2006_I722757 200 n/a - n/a
Identified Particles : Ratios
Λbar/Λ vs |y|
LHCB_2011_I917009 [900..7000] 4.0 +1.3 5.3
Identified Particles : Ratios
Λbar/Λ vs |Δy|
LHCB_2011_I917009 [900..7000] 5.6 +2.1 7.7
Identified Particles : pT
Λbar
ALICE_2011_I881474 900 23 0 23
STAR_2006_I722757 200 n/a - n/a
Omega2phi_pt
ALICE_2020_I1797443 13000 n/a - n/a
Omegapm_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
Σbar(1385)-
ALICE_2014_I1300380 7000 10.0 0 10.0
Identified Particles : pT
Σbar(1385)+
ALICE_2014_I1300380 7000 8.0 -0.60 7.4
Identified Particles : pT
Σ(1385)-
ALICE_2014_I1300380 7000 13 -3.0 10
Identified Particles : pT
Σ(1385)+
ALICE_2014_I1300380 7000 9.5 -0.20 9.3
Identified Particles : pT
Σc0,+,++
ALICE_2022_I1868463 13000 n/a - n/a
Identified Particles : Ratios
Σc0,+,++/D0 vs pT
ALICE_2022_I1868463 13000 n/a - n/a
Identified Particles : pT
Ξ(1530)
ALICE_2014_I1300380 7000 n/a - 27
Xi2phi_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
Ξ
ALICE_2011_I881474 900 11 +1.0 12
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
Ξ-
STAR_2006_I722757 200 n/a - n/a
Identified Particles : Ratios
Ξ+/Ξ- vs pT
STAR_2006_I722757 200 n/a - n/a
Identified Particles : pT
Ξ+
STAR_2006_I722757 200 n/a - n/a
<pT>j vs Nch
CMS_2013_I1261026 7000 2.1 -0.90 1.2
<pT> vs Nch
ALICE_2010_I860416 900 0.94* +0.26 1.2*
ATLAS_2010_I849050 900 n/a - n/a
CDF_2002_I567774 [630..1800] 0.81* - n/a
CDF_2009_I817466 1960 n/a - n/a
CMS_2013_I1261026 7000 2.6 -0.90 1.7
UA1_1990_I280412 [63..900] 1.6* -0.10 1.5*
Identified Particles : σ
ccbar
ALICE_2017_I1511870 7000 n/a - n/a
Energy flow
LHCB_2013_I1208105 7000 72 +1.0 73
Forward energy flow ratio
CMS_2013_I1218372 [900..7000] 2.8* -0.50 2.3*
EM energy spectrum
CMS_2017_I1511284 13000 n/a - n/a
Hadronic energy spectrum
CMS_2017_I1511284 13000 n/a - n/a
Total energy spectrum
CMS_2017_I1511284 13000 n/a - n/a
η Distributions
ALICE_2010_I852264 [900..7000] 25 -2.0 23*
ATLAS_2010_I849050 900 4.8 -0.20 4.6
CDF_1990_I283352 [630..1800] 3.7* - n/a
CMS_2015_I1384119 13000 n/a - n/a
TOTEM_2012_I1115294 7000 6.7 +0.100 6.8
UA5_1982_I176647 53 3.0 -0.10 2.9
UA5_1986_I233599 [200..900] 7.2 -0.10 7.1
Identified Particles : Ratios
η/π0 vs pT
ALICE_2012_I1116147 7000 n/a - n/a
Rapidity gap size
ATLAS_2012_I1084540 7000 15 0 15
Identified Particles : pT
η
ALICE_2012_I1116147 7000 0.80 +0.020 0.82
FB Correlations
b(Nch) vs Δη
UA5_1988_I263399 [200..900] 27 0 27
FB Correlations
b(Nch) vs ηC
UA5_1988_I263399 [200..900] 15 0 15
Jet pT
CMS_2013_I1261026 7000 n/a - 4.2*
STAR_2006_I723509 200 0.91* +1.5 2.4*
Jet Shapes
Differential Jet Shape
CMS_2013_I1261026 7000 2.8 -1.2 1.6
Diffraction
ξ
ATLAS_2019_I1762584 8000 n/a - n/a
n.E
LHCF_2020_I1783943 13000 n/a - n/a
n.avgk
LHCF_2020_I1783943 13000 n/a - n/a
n.eflow
LHCF_2020_I1783943 13000 n/a - n/a
n.k
LHCF_2020_I1783943 13000 n/a - n/a
Multiplicity Distributions
ALICE_2010_I852264 7000 n/a - n/a
ALICE_2010_I852450 [900..2360] 26* +4.0 30*
ATLAS_2010_I849050 900 n/a - n/a
CDF_2002_I567774 [630..1800] 8.8* - n/a
CDF_2009_NOTE_9936 1960 n/a - n/a
STAR_2008_I793126 200 n/a - n/a
UA1_1990_I280412 [200..900] 26* +1.0 27*
UA5_1987_I244829 546 n/a - n/a
UA5_1989_I267179 [200..900] n/a - n/a
Jet Multiplicities
Nj vs Nch
CMS_2013_I1261026 7000 55* +3.0 58*
Identified Particles : Ratios
p/π+ vs pT
ALICE_2020_I1797443 13000 n/a - n/a
STAR_2006_I709170 200 n/a - n/a
Identified Particles : pT
p
STAR_2006_I709170 200 n/a - n/a
STAR_2008_I793126 200 78 +22 100
Identified Particles : Ratios
pbar/p vs pT
STAR_2006_I709170 200 n/a - n/a
Identified Particles : Ratios
pbar/p vs |y|
LHCB_2012_I1119400 [900..7000] 3.7 -0.50 3.2
Identified Particles : Ratios
pbar/π vs pT
STAR_2006_I709170 200 n/a - n/a
Identified Particles : pT
pbar
STAR_2006_I709170 200 n/a - n/a
STAR_2008_I793126 200 30 -6.0 24
Identified Particles : Ratios
(pbar+p)/(K-+K+) vs |y|
LHCB_2012_I1119400 [900..7000] 8.0 +0.20 8.2
Identified Particles : Ratios
(pbar+p)/(π-+π+) vs pT
ALICE_2015_I1357424 7000 3.4 0 3.4
Identified Particles : Ratios
(pbar+p)/(π-+π+) vs |y|
LHCB_2012_I1119400 [900..7000] 2.3 +0.20 2.5
phi2pippim_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
φ
ALICE_2011_I881474 900 2.9 +0.20 3.1
ALICE_2020_I1797443 13000 n/a - n/a
ATLAS_2014_I1282441 7000 0.60 -0.010 0.59
LHCB_2011_I919315 7000 1.4 +0.80 2.2
Identified Particles : Y
φ
ATLAS_2014_I1282441 7000 0.43 -0.39 0.041
LHCB_2011_I919315 7000 0.49 +0.080 0.57
Identified Particles : pT
π0
ALICE_2012_I1116147 [900..7000] 5.7* +0.30 6.0*
LHCF_2012_I1115479 7000 7.7* -0.90 6.8
Identified Particles : Ratios
π-/π+ vs pT
STAR_2006_I709170 200 n/a - n/a
Identified Particles : Ratios
π-/π+ vs |y|
LHCB_2012_I1119400 [900..7000] 0.097 +0.17 0.27
Identified Particles : pT
π-
ALICE_2011_I885104 900 7.2 +0.20 7.4
STAR_2006_I709170 200 n/a - n/a
STAR_2008_I793126 200 1.9 -0.80 1.1
Identified Particles : pT
π+
ALICE_2011_I885104 900 7.2 -0.40 6.8
STAR_2006_I709170 200 n/a - n/a
STAR_2008_I793126 200 1.6 -0.20 1.4
Identified Particles : pT
π+ + π-
ALICE_2015_I1357424 7000 11 0 11
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
pbar
ALICE_2011_I885104 900 2.5 -0.30 2.2
Identified Particles : pT
p
ALICE_2011_I885104 900 2.1 -0.10 2.0
Identified Particles : pT
p + pbar
ALICE_2015_I1357424 7000 3.6 +0.10 3.7
ALICE_2020_I1797443 13000 n/a - n/a
pT Distributions
ALICE_2010_I860416 900 n/a - 16
ATLAS_2010_I849050 900 n/a - 13
CDF_1988_I263320 [630..1800] n/a - n/a
CDF_2009_I817466 1960 n/a - n/a
UA1_1990_I280412 [200..900] 49* -14 35*
<pT> vs mass
ALICE_2011_I885104 900 n/a - n/a
ALICE_2014_I1300380 7000 n/a - n/a
STAR_2006_I722757 200 n/a - n/a
Diffraction
Δη
ATLAS_2019_I1762584 8000 n/a - n/a
Diffraction
|t|
ATLAS_2019_I1762584 8000 n/a - n/a
sqrts.xsec
ALICE_2012_I1181770 900:2760:7000 n/a - n/a
Σ(ET)
ATLAS_2012_I1183818 7000 140 +10 150
CDF_2009_I817466 1960 n/a - n/a
UA1_1990_I280412 [200..900] 35* +12 47*
Σ(ET) vs Nch
UA1_1990_I280412 [200..900] 35* -5.0 30*
Diffractive ξ
CMS_2012_I1184941 7000 n/a - n/a
Cross sections
ATLAS_2011_I894867 7000 2.4 0 2.4
CMS_2012_I1193338 7000 0.83 -0.010 0.82

* 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 636 histograms.