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Trigger simulation check dijet fraction K0s and lambdas Dominik - PowerPoint PPT Presentation

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Trigger simulation check dijet fraction K0s and lambdas Dominik Wrana 08/23/11 Skype meeting 1 Trigger simulation L2 TWO CJET0.5 trigger: BSC Veto: No hit in BSC1 CLC: No hits in CLC Plug Veto: Trigger energy <0.75 GeV for sum of

  1. Trigger simulation check dijet fraction K0s and lambdas Dominik Wrana 08/23/11 Skype meeting 1

  2. Trigger simulation L2 TWO CJET0.5 trigger: BSC Veto: No hit in BSC1 CLC: No hits in CLC Plug Veto: Trigger energy <0.75 GeV for sum of towers in 0<=ieta<=2 and 21<=ieta<=23. TWO_CJET0.5: two towers with total ET>0.5 GeV in 6<=ieta<=17. (trigger energy → DcasDataBlock in StnTuple) For earlier runs no eta cut! (Jonathan) 08/23/11 Skype meeting 2

  3. 08/23/11 Skype meeting 3

  4. Cuts ● Cut on hottest tower energy 0.5 GeV ● Cut on 2 nd hottest tower energy 0.5 GeV ● Before cuts: 221815 ● After trigger sim: 170070 23% less! 08/23/11 Skype meeting 4

  5. 08/23/11 Skype meeting 5

  6. 08/23/11 Skype meeting 6 before after

  7. Crazy tower ● IPhi = 6 ● TEta = 37 ● Shift: E – 2 GeV ET – 1.05 GeV ● Before cuts: 221815 ● After trigger sim: 170070 23% less! ● After crazy tower cut: 159959 28% less! 08/23/11 Skype meeting 7

  8. All cuts ● All GXG without bad run – 306571 ● Trigger 2CJET0.5 ● BSC, CLC, Fplug vetoes ● Neural Net ● Trigger sim cut and crazy tower cut ● Ntracks > 4 ● 1 vertex ● ET sum > 4 GeV Events left: 159959 08/23/11 Skype meeting 8

  9. New means dist vs Sum ET Asymmetric errors - marker on mean 08/23/11 Skype meeting 9

  10. Dijet fraction N of events with 2 jets > 5 GeV ----------------------------------------- N of all events (in |eta| < 2.1) ● After trigger simulation and crazy tower cuts! 08/23/11 Skype meeting 10

  11. Asymmetric errors - marker on mean 08/23/11 Skype meeting 11

  12. K0s and lambdas ● Using Maria's code: with colinearity cut <= 3 and decay length > 0.5 Each track in |eta| < 2.1, or |eta| < 1.1, Pt of track > 0.4 GeV/c ● Other cuts: 2CJET0.5 trigger and gap vetoes, neural net crazy tower and trig sim cuts, Sum ET > 4 GeV, 1 vertex, 08/23/11 Skype meeting 12

  13. 4 tracks 4 tracks 08/23/11 Skype meeting 13

  14. 4 tracks Lambdas 08/23/11 Skype meeting 14

  15. 6 tracks 8 tracks 08/23/11 Skype meeting 15

  16. 10 tracks 12 tracks 08/23/11 Skype meeting 16

  17. 14 tracks Too small statistic!! 08/23/11 Skype meeting 17

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