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Muon Trigger Acceptance Study

This study focuses on enhancing muon acceptance through the implementation of the BMU trigger alongside existing triggers like CMUP18 and CMX18. We aim to assess acceptance gains from these triggers and investigate critical muon regions: blue beam, keystone, and mini-skirt. Initial data indicates fewer than 1% additional events in the BHMU stream. Future steps include examining the presence of a separate BMU-triggered data stntuple and analyzing the efficiencies of recently implemented triggers to refine acceptance metrics.

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Muon Trigger Acceptance Study

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  1. Muon Trigger Acceptance Study Ye Li UW-Madison

  2. Goals • Implement BMU + track trigger to extend acceptance for dimuons; • Investigate the acceptance gain from other newly implemented triggers; • Investigate the acceptance gain using the following muon regions: blue beam, keystone, and mini skirt.

  3. Z Muon Cuts

  4. Run Number Plots of Z Muons • Require one leg as CMUP muon and the other as BMU muon • The RH plot has both triggers CMUP18 and L3BMU on

  5. Invariant Mass

  6. The top plots are: • no trigger required total entries: 84521 • CMUP18 or CMX18 on total entries: 83872 • CMUP18, CMX18 or L3BMU on total entries: 83873 • The bottom plots are: • no trigger required • CMUP18 and CMX18 on • CMUP18 and L3BMU on

  7. Eta Distribution

  8. Use “or” to find out the following: • How many data events we have from the standard requirement of CMUP or CMX • How many data events we would gain by adding the BMU trigger, that is, requiring CMUP, CMX or BMU • How many total events there are in the bhmu stream, that is, by including all other non-standard triggers • Fewer than 1% additional events in the entire bhmu stream ( BMU data not included in the current stream? )

  9. What to do next? • Check if there is a separate BMU-triggered data stntuple; • Use fiduciality definitions in the stntuple of the CMUP and CMX systems; • Investigate the acceptance gain using the following muon regions: blue beam, keystone, and mini skirt; • Study the efficiencies of newly implemented trigger.

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