Generator / tune

Details for Pythia 6.426 default 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 9.3 - n/a
ALICE_2022_I1868463 13000 n/a - n/a
LHCB_2013_I1218996 7000 110 +20 130
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 n/a - n/a
LHCB_2013_I1218996 7000 66 +1.0 67
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 - n/a
Identified Particles : pT
Ds+
ALICE_2017_I1511870 7000 2.1 +1.1 3.2
LHCB_2013_I1218996 7000 4.0* +2.9 6.9*
Identified Particles : σ
Ds+
ALICE_2017_I1511870 7000 n/a - n/a
Identified Particles : Ratios
Ds+/D0 vs pT
ALICE_2017_I1511870 7000 0.18 +1.3 1.5
Identified Particles : Ratios
Ds+/D+ vs pT
ALICE_2017_I1511870 7000 0.46 +0.54 1.0
Identified Particles : pT
D*+
ALICE_2017_I1511870 7000 n/a - n/a
LHCB_2013_I1218996 7000 37 +2.0 39*
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 - n/a
K0S2pippim_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
K0S
ALICE_2011_I881474 900 16 0 16
ALICE_2020_I1797443 13000 n/a - n/a
LHCB_2010_I865584 900 4.3 -0.20 4.1
STAR_2006_I722757 200 n/a - n/a
Identified Particles : Ratios
K-/K+ vs |y|
LHCB_2012_I1119400 [900..7000] 1.3 -0.10 1.2
Identified Particles : Ratios
(K-+K+)/(π-+π+) vs pT
ALICE_2015_I1357424 7000 8.6 -1.2 7.4
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : Ratios
(K-+K+)/(π-+π+) vs |y|
LHCB_2012_I1119400 [900..7000] 7.9 -0.10 7.8
Identified Particles : pT
K-
ALICE_2011_I885104 900 5.8 +1.1 6.9
STAR_2006_I722757 200 12 -2.0 10.0
STAR_2008_I793126 200 5.4 -2.7 2.7
Identified Particles : pT
K+
ALICE_2011_I885104 900 6.4 -1.2 5.2
STAR_2006_I722757 200 7.0 +0.60 7.6
STAR_2008_I793126 200 3.0 -0.70 2.3
Identified Particles : pT
K+ + K-
ALICE_2015_I1357424 7000 17 -1.0 16
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 41 -3.0 38
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 33 -3.0 30
STAR_2006_I722757 200 n/a - n/a
Identified Particles : pT
Λc+
ALICE_2022_I1868463 13000 n/a - n/a
LHCB_2013_I1218996 7000 250 +60 310
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] 4.9 +0.70 5.6
Identified Particles : Ratios
Λbar/K0S vs |y|
LHCB_2011_I917009 [900..7000] 4.4 +0.50 4.9
Identified Particles : Ratios
Λbar/K0S vs |Δy|
LHCB_2011_I917009 [900..7000] 6.2 +0.90 7.1
Identified Particles : Ratios
Λbar/Λ vs pT
LHCB_2011_I917009 [900..7000] 3.1 -0.20 2.9
STAR_2006_I722757 200 n/a - n/a
Identified Particles : Ratios
Λbar/Λ vs |y|
LHCB_2011_I917009 [900..7000] 3.7 -0.20 3.5
Identified Particles : Ratios
Λbar/Λ vs |Δy|
LHCB_2011_I917009 [900..7000] 5.2 -0.10 5.1
Identified Particles : pT
Λbar
ALICE_2011_I881474 900 22 0 22
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 10
Identified Particles : pT
Σbar(1385)+
ALICE_2014_I1300380 7000 8.2 +0.20 8.4
Identified Particles : pT
Σ(1385)-
ALICE_2014_I1300380 7000 10 0 10
Identified Particles : pT
Σ(1385)+
ALICE_2014_I1300380 7000 10 -2.0 8.0
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 - n/a
Xi2phi_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
Ξ
ALICE_2011_I881474 900 12 -1.0 11
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 1.0 +0.80 1.8
<pT> vs Nch
ALICE_2010_I860416 900 0.63* -0.080 0.55*
ATLAS_2010_I849050 900 n/a - n/a
CDF_2002_I567774 [630..1800] n/a - 0.45*
CDF_2009_I817466 1960 n/a - n/a
CMS_2013_I1261026 7000 2.0 +0.30 2.3
UA1_1990_I280412 [63..900] 2.4* +0.20 2.6*
Identified Particles : σ
ccbar
ALICE_2017_I1511870 7000 n/a - n/a
Energy flow
LHCB_2013_I1208105 7000 67 -2.0 65
Forward energy flow ratio
CMS_2013_I1218372 [900..7000] 3.1* +0.60 3.7*
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] 22* +1.0 23*
ATLAS_2010_I849050 900 3.4 0 3.4
CDF_1990_I283352 [630..1800] n/a - 2.9*
CMS_2015_I1384119 13000 n/a - n/a
TOTEM_2012_I1115294 7000 6.2 +0.30 6.5
UA5_1982_I176647 53 4.1 +0.10 4.2
UA5_1986_I233599 [200..900] 5.1 +0.10 5.2
Identified Particles : Ratios
η/π0 vs pT
ALICE_2012_I1116147 7000 n/a - n/a
Rapidity gap size
ATLAS_2012_I1084540 7000 14 0 14
Identified Particles : pT
η
ALICE_2012_I1116147 7000 0.57 +0.090 0.66
FB Correlations
b(Nch) vs Δη
UA5_1988_I263399 [200..900] 28 -1.0 27
FB Correlations
b(Nch) vs ηC
UA5_1988_I263399 [200..900] 15 0 15
Jet pT
CMS_2013_I1261026 7000 3.8* +0.60 4.4*
STAR_2006_I723509 200 2.8* +0.70 3.5*
Jet Shapes
Differential Jet Shape
CMS_2013_I1261026 7000 3.4 -1.7 1.7
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] 27* -4.0 23*
ATLAS_2010_I849050 900 n/a - n/a
CDF_2002_I567774 [630..1800] n/a - n/a
CDF_2009_NOTE_9936 1960 n/a - n/a
STAR_2008_I793126 200 n/a - n/a
UA1_1990_I280412 [200..900] 22* -1.0 21
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 n/a - 66*
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 88 -9.0 79
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] 2.7 +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 19 0 19
Identified Particles : Ratios
(pbar+p)/(K-+K+) vs |y|
LHCB_2012_I1119400 [900..7000] 8.6 0 8.6
Identified Particles : Ratios
(pbar+p)/(π-+π+) vs pT
ALICE_2015_I1357424 7000 3.6 -0.50 3.1
Identified Particles : Ratios
(pbar+p)/(π-+π+) vs |y|
LHCB_2012_I1119400 [900..7000] 2.4 -0.10 2.3
phi2pippim_pt
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
φ
ALICE_2011_I881474 900 3.2 -0.60 2.6
ALICE_2020_I1797443 13000 n/a - n/a
ATLAS_2014_I1282441 7000 0.23 +0.44 0.67
LHCB_2011_I919315 7000 1.4 0 1.4
Identified Particles : Y
φ
ATLAS_2014_I1282441 7000 0.28 -0.090 0.19
LHCB_2011_I919315 7000 0.59 -0.12 0.47
Identified Particles : pT
π0
ALICE_2012_I1116147 [900..7000] 4.2* +0.30 4.5*
LHCF_2012_I1115479 7000 3.9 -0.50 3.4*
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] 0.16 +0.090 0.25
Identified Particles : pT
π-
ALICE_2011_I885104 900 5.5 0 5.5
STAR_2006_I709170 200 n/a - n/a
STAR_2008_I793126 200 2.9 -0.80 2.1
Identified Particles : pT
π+
ALICE_2011_I885104 900 5.2 +0.100 5.3
STAR_2006_I709170 200 n/a - n/a
STAR_2008_I793126 200 2.9 -0.20 2.7
Identified Particles : pT
π+ + π-
ALICE_2015_I1357424 7000 10 +1.0 11
ALICE_2020_I1797443 13000 n/a - n/a
Identified Particles : pT
pbar
ALICE_2011_I885104 900 2.2 -0.20 2.0
Identified Particles : pT
p
ALICE_2011_I885104 900 2.7 -0.60 2.1
Identified Particles : pT
p + pbar
ALICE_2015_I1357424 7000 3.7 -0.60 3.1
ALICE_2020_I1797443 13000 n/a - n/a
pT Distributions
ALICE_2010_I860416 900 n/a - 10
ATLAS_2010_I849050 900 n/a - n/a
CDF_1988_I263320 [630..1800] n/a - n/a
CDF_2009_I817466 1960 n/a - n/a
UA1_1990_I280412 [200..900] 21* +1.0 22*
<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 0 140
CDF_2009_I817466 1960 n/a - n/a
UA1_1990_I280412 [200..900] 51* -5.0 46
Σ(ET) vs Nch
UA1_1990_I280412 [200..900] 30* 0 30
Diffractive ξ
CMS_2012_I1184941 7000 n/a - n/a
Cross sections
ATLAS_2011_I894867 7000 2.4 -0.10 2.3
CMS_2012_I1193338 7000 0.78 -0.020 0.76

* 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.