Muon rates from minimum bias (without PionDecayer)

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Muon rates from minimum bias(without PionDecayer)
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Used sample

• 99000 minimum bias events (no forced decays)
• misal1_csc11.005001.pythia_minbias.digit.RDO.v1200
  3103
• Also used (slightly different reconstruction
  versions) by
• M. Dufour, Overview of current menu Sep 24,
  2007 249100 events
• T. Buanes, Summary of cross section estimates
  Oct 10, 2007 1054000 events
• Study on AANT, information on MC Truth taken from
  the block Npar (e.g. PtGen-gtat(j))

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pT at truth level
Muon source Pions Kaons Charm Beauty
pT (MeV)
No ? cuts applied
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pT at truth level
Muon source Pions Kaons Charm Beauty
pT (MeV)
?lt2.4
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Cross-sections (mbarn)
PYTHIA () PYTHIA () PYTHIA () DPMJET () DPMJET () DPMJET () Min bias (p only) Min bias (K only)
stot(p?m) (all) (p only) (K only) (all) (p only) (K only) Min bias (p only) Min bias (K only)
3ltpTlt45 GeV 38.4 22.8 15.5 81.2 38.1 33.8 36.6 19.1
3ltpTlt45 GeV 36.7 21.9 14.8 77.8 36.6 32.4 34.0 17.9
4ltpTlt45 GeV 10.3 5.98 4.3 20.3 9.48 8.6 9.64 5.39
4ltpTlt45 GeV 9.85 5.73 4.1 19.5 9.10 8.2 9.0 5.0
5ltpTlt45 GeV 3.56 2.04 1.53 6.51 3.04 2.7 3.16 1.64
5ltpTlt45 GeV 3.42 1.96 1.47 6.25 2.92 2.6 2.95 1.53
6ltpTlt45 GeV 1.48 0.83 0.64 2.59 1.21 1.07 1.26 0.64
6ltpTlt45 GeV 1.42 0.79 0.61 2.49 1.16 1.03 1.19 0.58
Minimum bias () LIGHT () Minimum bias LIGHT () Minimum bias HEAVY () Minimum bias HEAVY () Minimum bias
K/ p p K c b
41.7 30.5 33.1 74 46
39.4 27.0 30.5 65 39
11.7 8.7 9.6 40 24.3
11.4 7.0 7.0 34.8 22.6
4.3 3.5 3.5 20.9 13.9
4.3 1.7 2.6 18.3 13.1
2.2 2.6 2.6 13.9 7.8
2.0 0.9 1.7 12.2 7.0
() Y. Oren and A. Nisati DPMJET default for
rates computation (more conservative) () T.
Buanes. Estimate from minimum bias , stot54.71
mb normalized to 79 mb () Present study.
Relative statistical errors 2050 , stot79 mb
hlt2.7
hlt2.4
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pT and ?2 after EF
Muon source Pions Kaons Charm Beauty
Pion punchthru Kaon punchthru
Muon source Pions Kaons Charm Beauty
Pion punchthru Kaon punchthru
Truth pT (MeV)
Muid CB track ?2
?lt2.4
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MuidCB ?2 vs. pT
Muon source Pions Kaons Charm Beauty
Pion punchthru Kaon punchthru
Muid CB track ?2
Muid CB pT (MeV)
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EF rates a first comparison
minimum bias counting
estimates with muonrates
4 GeV 1031cm-2s-1 Rate (Hz)
p/K 50
beauty 120
charm 200
punchthru 20
TOTAL 390
4 GeV 1031cm-2s-1 Rate (Hz)
p/K 240
beauty 40
charm 25
TOTAL 300
M.A. Dufour 539 (2? disagree)
6 GeV 1033cm-2s-1 Rate (Hz)
p/K 2500
beauty 5000
charm 13000
punchthru 1000
TOTAL 22000
6 GeV 1033cm-2s-1 Rate (Hz)
p/K 2800
beauty 1300
charm 650
TOTAL 4800
M.A. Dufour 20600 (agree)
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Open questions

• Why is Trygve finding a total cross section of
  54.71 mb instead of 79 mb (as by Marc Dufour)?
  Maybe different versions of PYTHIA?
• We are not able to download Trygves minbias RDO
  to be understood