Generator / tune

Details for Pythia 6 (359:TeV) v.6.427 vs. v.6.428

pp/ppbar → Soft QCD (inelastic)

Observable Cut Energy χ2+5% (6.427) Δ χ2+5% (6.428)
D0 y-2.0-2.5 7000 5.9 +1.8 7.7
y-3.0-3.5 7000 5.2 +1.6 6.8
y-4.0-4.5 7000 3.9 +0.80 4.7
D+ y-2.0-2.5 7000 11 +2.0 13
y-3.0-3.5 7000 6.1 0 6.1
y-4.0-4.5 7000 8.4 +1.6 10
Ds+ y-2.0-2.5 7000 6.4 +0.80 7.2
y-3.0-3.5 7000 2.7 +0.70 3.4
y-3.5-4.0 7000 0.88 +0.12 1.0
D*+ y-2.0-2.5 7000 1.9 +0.40 2.3
y-3.0-3.5 7000 3.4 +0.80 4.2
y-4.0-4.5 7000 2.5 -0.10 2.4
K0S ALICE |y| < 0.75 900 17 -1.0 16
LHCb 2.5 < y < 3.0 900 0.41 -0.0100 0.40
LHCb 3.0 < y < 3.5 900 1.5 +0.10 1.6
LHCb 3.5 < y < 4.0 900 1.8 -0.10 1.7
LHCb 2.5 < y < 3.0 900 0.42 -0.010 0.41
LHCb 2.5 < y < 4.0 900 1.2 0 1.2
LHCb 3.0 < y < 3.5 900 1.5 +0.10 1.6
LHCb 3.5 < y < 4.0 900 1.8 0 1.8
STAR 200 11 +1.0 12
K-/K+ vs |y| LHCb 900 0.47 +0.18 0.65
7000 1.5 +0.90 2.4
LHCb 900 0.91 -0.13 0.78
7000 0.98 -0.060 0.92
LHCb 900 0.76 +0.44 1.2
7000 0.18 +0.10 0.28
(K-+K+)/(π-+π+) vs pT alice2015-y0.5 7000 14 +1.0 15
(K-+K+)/(π-+π+) vs |y| LHCb 900 3.8 -0.100 3.7
7000 3.5 0 3.5
LHCb 900 11 +2.0 13
7000 21 0 21
LHCb 900 13 +2.0 15
7000 42 +1.0 43
K- alice2011-y0.5 900 9.2 -0.80 8.4
STAR 200 2.2 -0.10 2.1
STAR 200 2.2 +0.20 2.4
K+ alice2011-y0.5 900 8.7 -0.50 8.2
STAR 200 1.3 0 1.3
STAR 200 2.2 -0.10 2.1
K+ + K- alice2015-y0.5 7000 6.7 -0.50 6.2
Λ/K0S vs pT ALICE |y| < 0.75 900 12 0 12
Λ ALICE |y| < 0.75 900 40 0 40
STAR 200 49 +1.0 50
Λc LHCb 7000 2.1 -0.10 2.0
Λbar/K0S vs pT LHCb 900 6.7 +1.6 8.3
LHCb 7000 8.1 +0.90 9.0
Λbar/K0S vs |y| LHCb 900 4.7 +0.70 5.4
LHCb 7000 0.59 -0.100 0.49
lhcb2011-pt0.15-2.5 7000 5.8 0 5.8
LHCb 900 0.57 +0.19 0.76
LHCb 900 4.9 +0.20 5.1
7000 5.3 +0.20 5.5
LHCb 900 9.8 +3.2 13
7000 15 +1.0 16
Λbar/K0S vs |Δy| LHCb 7000 5.8 0 5.8
LHCb 900 4.7 +0.70 5.4
Λbar/Λ vs pT LHCb 900 2.6 -0.50 2.1
LHCb 7000 0.16 +0.22 0.38
STAR 200 n/a* - n/a*
Λbar/Λ vs |y| LHCb 900 5.4 -1.3 4.1
LHCb 7000 0.62 -0.46 0.16
lhcb2011-pt0.15-2.5 7000 1.00 -0.21 0.79
LHCb 900 6.0 -1.5 4.5
LHCb 900 2.0 -0.40 1.6
7000 0.37 +0.060 0.43
LHCb 900 3.8 -2.3 1.5
7000 1.5 -0.30 1.2
Λbar/Λ vs |Δy| LHCb 7000 0.42 -0.22 0.20
LHCb 900 5.4 -1.3 4.1
Λbar ALICE |y| < 0.75 900 29 -1.0 28
STAR 200 53 +1.0 54
Σbar(1385)- alice2015-y0.5bar 7000 16 -1.0 15
Σbar(1385)+ alice2015-y0.5bar 7000 9.9 -0.100 9.8
Σ(1385)- alice2015-y0.5 7000 16 0 16
Σ(1385)+ alice2015-y0.5 7000 17 -1.0 16
Ξ(1530) alice2015-y0.5 7000 79 -2.0 77
Ξ ALICE |y| < 0.8 900 9.9 -0.20 9.7
Ξ- STAR 200 7.5 +0.50 8.0
Ξ+/Ξ- vs pT STAR 200 n/a* - n/a*
Ξ+ STAR 200 9.9 -0.40 9.5
<pT> vs Nch ALICE pT > 0.15 900 0.28 0 0.28
ALICE pT > 0.5 900 0.73 -0.090 0.64
ATLAS pT > 0.5 900 0.15 +0.030 0.18
ATLAS Nch ≥ 1 pT > 2.5 900 0.15 -0.050 0.10
ATLAS Nch ≥ 1 pT > 0.5 900 0.19 +0.020 0.21
ATLAS Nch ≥ 1 pT > 0.1 900 1.8 -0.10 1.7
ATLAS Nch ≥ 1 pT > 2.5 7000 0.23 -0.050 0.18
ATLAS Nch ≥ 1 pT > 0.5 7000 0.39 -0.020 0.37
ATLAS Nch ≥ 2 pT > 0.1 7000 4.4 -0.20 4.2
CDF pT > 0.4 630 0.77 +0.16 0.93
1800 0.23 +0.080 0.31
1960 0.18 -0.050 0.13
UA1 63 1.3 -0.10 1.2
200 2.4 -0.20 2.2
900 3.2 -0.20 3.0
Forward energy flow ratio CMS Energy flow ratio 900 0.46 -0.32 0.14
2760 0.17 -0.030 0.14
7000 0.51 -0.040 0.47
η Distributions ALICE INEL > 0 900 8.1 -1.0 7.1
2360 7.3 -1.1 6.2
7000 6.3 -1.0 5.3
ATLAS pT > 0.5 900 0.60 -0.14 0.46
ATLAS Nch ≥ 1 pT > 2.5 900 0.25 +0.030 0.28
ATLAS Nch ≥ 1 pT > 0.5 900 0.86 -0.20 0.66
ATLAS Nch ≥ 1 pT > 0.1 900 8.4 -0.70 7.7
ATLAS Nch ≥ 20 pT > 0.1 900 2.0 -0.20 1.8
ATLAS Nch ≥ 6 pT > 0.5 900 0.089 +0.031 0.12
ATLAS Nch ≥ 1 pT > 0.5 2360 0.37 -0.080 0.29
ATLAS Nch ≥ 1 pT > 2.5 7000 0.082 -0.0050 0.077
ATLAS Nch ≥ 1 pT > 0.5 7000 0.055 -0.026 0.029
ATLAS Nch ≥ 2 pT > 0.1 7000 7.4 -0.80 6.6
ATLAS Nch ≥ 20 pT > 0.1 7000 3.1 -0.30 2.8
ATLAS Nch ≥ 6 pT > 0.5 7000 0.021 +0.0100 0.031
CDF-VTPC |η < 3.5| 630 0.54 +0.040 0.58
1800 0.48 +0.030 0.51
CMS INEL charged 13000 6.7 -0.80 5.9
TOTEM INEL > 0 7000 11 0 11
UA5 NSD 53 0.92 -0.020 0.90
ua5-inel 200 8.6 -0.20 8.4
900 14 -1.0 13
η/π0 vs pT alice2012n 7000 2.5 - n/a*
Rapidity gap size ATLAS pT > 0.2, |η| < 4.9 7000 16 0 16
ATLAS pT > 0.4, |η| < 4.9 7000 13 0 13
ATLAS pT > 0.6, |η| < 4.9 7000 1.1 -0.10 1.0
ATLAS pT > 0.8, |η| < 4.9 7000 0.73 0 0.73
η alice2012n 7000 0.32 -0.040 0.28
b(Nch) vs Δη UA5 200 1.4 +0.40 1.8
546 0.46 -0.11 0.35
900 2.9 -0.30 2.6
b(Nch) vs ηC UA5 200 14 +2.0 16
546 15 0 15
900 8.6 +0.90 9.5
Multiplicity Distributions ALICE INEL > 0 7000 18 -2.0 16
ALICE |η| < 0.5 900 16 -2.0 14
2360 7.9 -1.1 6.8
ALICE |η| < 1.0 900 17 -2.0 15
2360 6.2 -0.70 5.5
ALICE |η| < 1.3 900 15 -2.0 13
2360 7.1 -0.80 6.3
ATLAS pT > 0.5 900 0.73 -0.080 0.65
ATLAS Nch ≥ 1 pT > 2.5 900 0.023 +0.044 0.067
ATLAS Nch ≥ 1 pT > 0.5 900 2.0 -0.30 1.7
ATLAS Nch ≥ 1 pT > 0.1 900 14 -1.0 13
ATLAS Nch ≥ 20 pT > 0.1 900 6.9 -0.90 6.0
ATLAS Nch ≥ 6 pT > 0.5 900 0.70 -0.070 0.63
ATLAS Nch ≥ 1 pT > 0.5 2360 0.40 +0.11 0.51
ATLAS Nch ≥ 1 pT > 2.5 7000 1.3 0 1.3
ATLAS Nch ≥ 1 pT > 0.5 7000 2.3 0 2.3
ATLAS Nch ≥ 2 pT > 0.1 7000 8.6 -0.90 7.7
ATLAS Nch ≥ 20 pT > 0.1 7000 5.5 -0.70 4.8
ATLAS Nch ≥ 6 pT > 0.5 7000 1.8 0 1.8
CDF pT > 0.4 630 2.4 +1.4 3.8
1800 4.9 +2.6 7.5
1960 7.5 +2.5 10
STAR 200 n/a* - n/a*
UA1 200 3.4 -0.30 3.1
500 2.1 -0.20 1.9
900 1.9 0 1.9
UA5 NSD 200 18 0 18
546 41 0 41
900 20 0 20
UA5 |η| < 0.5 200 1.1 -0.15 0.95
900 1.8 -0.30 1.5
UA5 |η| < 1.5 200 1.2 -0.20 1.0
900 1.4 -0.100 1.3
UA5 |η| < 3.0 200 1.3 0 1.3
900 1.7 -0.100 1.6
UA5 |η| < 5.0 200 0.91 -0.050 0.86
900 1.9 -0.100 1.8
p STAR 200 260 0 260
pbar/p vs |y| LHCb 900 2.4 +0.20 2.6
7000 1.5 -0.84 0.66
LHCb 900 3.6 +1.4 5.0
7000 1.6 -1.0 0.56
LHCb 900 1.6 -1.1 0.48
7000 0.54 -0.020 0.52
pbar STAR 200 110 +10 120
(pbar+p)/(K-+K+) vs |y| LHCb 900 8.5 +2.5 11
7000 5.0 -0.30 4.7
LHCb 900 0.69 +0.31 1.0
7000 3.9 -0.20 3.7
LHCb 900 1.3 +1.00 2.3
7000 0.88 +0.42 1.3
(pbar+p)/(π-+π+) vs pT alice2015-y0.5 7000 5.2 +0.20 5.4
(pbar+p)/(π-+π+) vs |y| LHCb 900 1.9 +1.3 3.2
7000 0.86 +0.24 1.1
LHCb 900 6.2 -0.80 5.4
7000 5.3 +0.70 6.0
LHCb 900 14 +5.0 19
7000 21 -1.0 20
φ ALICE |y| < 0.6 900 3.6 -0.40 3.2
atlas2014-phiKK 7000 3.8 0 3.8
LHCb 2.44 < y < 4.06 7000 12 0 12
φ atlas2014-phiKK 7000 2.4 0 2.4
LHCb 0.6 < pT < 5 7000 12 0 12
π0 alice2012n 900 1.0 +0.20 1.2
7000 10 -1.5 8.5
LHCf π0 at 8.9 < |y| < 9.0 7000 25 0 25
LHCf π0 at 9.0 < |y| < 9.2 7000 51 +1.0 52
LHCf π0 at 9.2 < |y| < 9.4 7000 54 +3.0 57
LHCf π0 at 9.4 < |y| < 9.6 7000 73 +4.0 77
LHCf π0 at 9.6 < |y| < 10.0 7000 81 +4.0 85
LHCf π0 at 10.0 < |y| < 11.0 7000 130 +10 140
π-/π+ vs |y| LHCb 900 0.60 -0.19 0.41
7000 0.11 -0.043 0.067
LHCb 900 0.20 +0.43 0.63
7000 0.033 +0.19 0.22
LHCb 900 0.27 +0.71 0.98
7000 0.28 -0.15 0.13
π- alice2011-y0.5 900 5.4 -0.30 5.1
STAR 200 4.1 +0.10 4.2
π+ alice2011-y0.5 900 5.7 -0.40 5.3
STAR 200 4.1 +0.10 4.2
π+ + π- alice2015-y0.5 7000 5.5 +0.100 5.6
pbar alice2011-y0.5 900 7.4 -0.10 7.3
p alice2011-y0.5 900 6.5 +0.40 6.9
p + pbar alice2015-y0.5 7000 2.1 -0.40 1.7
pT Distributions ALICE pT > 0.15 900 4.5 +0.50 5.0
ATLAS pT > 0.5 900 2.4 +0.60 3.0
ATLAS Nch ≥ 1 pT > 2.5 900 3.9 -2.4 1.5
ATLAS Nch ≥ 1 pT > 0.5 900 3.9 +0.90 4.8
ATLAS Nch ≥ 1 pT > 0.1 900 7.4 +0.90 8.3
ATLAS Nch ≥ 20 pT > 0.1 900 4.0 -1.5 2.5
ATLAS Nch ≥ 6 pT > 0.5 900 1.6 -0.30 1.3
ATLAS Nch ≥ 1 pT > 0.5 2360 0.28 +0.0100 0.29
ATLAS Nch ≥ 1 pT > 2.5 7000 4.0 -2.0 2.0
ATLAS Nch ≥ 1 pT > 0.5 7000 3.6 -1.5 2.1
ATLAS Nch ≥ 2 pT > 0.1 7000 4.3 -1.2 3.1
ATLAS Nch ≥ 20 pT > 0.1 7000 7.9 -2.0 5.9
ATLAS Nch ≥ 6 pT > 0.5 7000 4.2 -1.7 2.5
CDF pT > 0.4 630 1.3 -0.10 1.2
1800 3.6 -0.30 3.3
1960 n/a* - n/a*
UA1 200 2.0 +0.40 2.4
500 1.8 +0.100 1.9
900 2.5 -0.20 2.3
UA1 0.8 < |η| < 4 900 26 -4.0 22
UA1 4 < |η| < 8 900 34 -4.0 30
UA1 8 < |η| 900 13 +6.0 19
<pT> vs mass alice2011-y0.5 900 1.9 0 1.9
alice2015-y0.5 7000 2.5 -0.10 2.4
STAR 200 n/a* - n/a*
Σ(ET) ATLAS 7000 5.8 -0.100 5.7
ATLAS 0.0 < |η| < 0.8 7000 0.25 -0.020 0.23
ATLAS 0.8 < |η| < 1.6 7000 0.32 -0.020 0.30
ATLAS 1.6 < |η| < 2.4 7000 1.4 -0.100 1.3
ATLAS 2.4 < |η| < 3.2 7000 6.4 -0.30 6.1
ATLAS 3.2 < |η| < 4.0 7000 8.8 -0.20 8.6
ATLAS 4.0 < |η| < 4.8 7000 21 0 21
CDF pT > 0.4 1960 1.9 0 1.9
UA1 200 22 0 22
500 19 0 19
900 50 -1.0 49
Σ(ET) vs Nch UA1 200 2.8 0 2.8
500 2.2 0 2.2
900 2.6 +0.10 2.7
Diffractive ξ CMS pp → jet1 jet2 7000 n/a* - 0.63
Cross sections ALICE DD 900 0.22 -0.010 0.21
2760 0.039 -0.0010 0.038
7000 0.13 -0.010 0.12
ALICE DD/INEL 900 8.1 +0.100 8.2
2760 0.25 -0.010 0.24
7000 0.030 +0.0080 0.038
ALICE INEL 900 0.00025 0 0.00025
2760 0.025 0 0.025
7000 0.088 0 0.088
ALICE SD 900 0.10 0 0.10
2760 0.38 -0.010 0.37
7000 1.3 0 1.3
ALICE SD/INEL 900 0.099 -0.016 0.083
2760 0.47 0 0.47
7000 1.5 +0.10 1.6
ATLAS INEL 7000 1.7 0 1.7
CMS INEL 7000 0.43 -0.010 0.42

* not applicable: because number of bins of data histogram is different than number of bins of theory histogram

The page data is based on 550 histograms.