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Onia 2013-02-06

Onia 2013-02-06

Sasha Mazurov

March 23, 2013
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  1. χb → ϒγ Monte-Carlo Study Sasha Mazurov Ferrara University, CERN

    Febrary 6 2013 A. Mazurov (Ferrara University, CERN) χb → ϒγ Monte-Carlo Study Febrary 6 2013 1 / 13
  2. Simulated MC events 6 event types χb1,2 (1,2,3P). For each

    type: 500K(MagUp) + 500K(MagDown) events A. Mazurov (Ferrara University, CERN) χb → ϒγ Monte-Carlo Study Febrary 6 2013 2 / 13
  3. Study MC vs. Data Compare yield’s width Check distribution of

    main cut’s parameters A. Mazurov (Ferrara University, CERN) χb → ϒγ Monte-Carlo Study Febrary 6 2013 3 / 13
  4. MC Unmatched Events A. Mazurov (Ferrara University, CERN) χb →

    ϒγ Monte-Carlo Study Febrary 6 2013 4 / 13
  5. MC Matched Events A. Mazurov (Ferrara University, CERN) χb →

    ϒγ Monte-Carlo Study Febrary 6 2013 5 / 13
  6. Data Fit A. Mazurov (Ferrara University, CERN) χb → ϒγ

    Monte-Carlo Study Febrary 6 2013 6 / 13
  7. Width Comparison σMCmatched σMCunmatched σdata χb1 (1P) 0.0208 ±0.0003 0.0233

    ±0.0004 0.0264 ±0.0013 χb2 (1P) 0.0213 ±0.0007 χb1 (2P) 0.0320 ±0.0005 0.0330 ±0.0003 0.0377 ±0.0046 χb2 (2P) 0.0354 ±0.0012 χb1 (3P) 0.0419 ±0.0008 0.0417 ±0.0011 0.0475 ±0.0120 χb2 (3P) 0.0426 ±0.0016 A. Mazurov (Ferrara University, CERN) χb → ϒγ Monte-Carlo Study Febrary 6 2013 7 / 13
  8. pT(gamma) Distribution (1) A. Mazurov (Ferrara University, CERN) χb →

    ϒγ Monte-Carlo Study Febrary 6 2013 8 / 13
  9. pT(gamma) Distribution (2) A. Mazurov (Ferrara University, CERN) χb →

    ϒγ Monte-Carlo Study Febrary 6 2013 9 / 13
  10. pT(Upsilon) Distribution A. Mazurov (Ferrara University, CERN) χb → ϒγ

    Monte-Carlo Study Febrary 6 2013 10 / 13
  11. pT(chib) Distribution A. Mazurov (Ferrara University, CERN) χb → ϒγ

    Monte-Carlo Study Febrary 6 2013 11 / 13
  12. pT(Upsilon) spectrum MC Data A. Mazurov (Ferrara University, CERN) χb

    → ϒγ Monte-Carlo Study Febrary 6 2013 12 / 13
  13. Conclusion Good yield’s width. Will try to improve cut function

    using MC information. Need to check other fit parameter’s distribution. A. Mazurov (Ferrara University, CERN) χb → ϒγ Monte-Carlo Study Febrary 6 2013 13 / 13