1 / 8

BMU Triggers for Higgs

Explore trigger efficiency in Higgs analysis and refine muon categorization using meeting data from Wisconsin group sessions. Discuss resolutions to unresolved denominator fills and improve trigger accounting. Adjusting eta cuts, integrating artificial cuts, and assessing efficiency statistics are key topics. Further discussions on ZH event analysis and trigger prioritization for Z-muons are highlighted.

rlundgren
Download Presentation

BMU Triggers for Higgs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. BMU Triggers for Higgs Jason Nett Wisconsin Group Meeting June 2th, 2008 • Muon Categorization for Triggering III BEACH 04 J. Piedra 1

  2. Review • Previous Questions/Issues: • Look at phi plots in forward region to understand unaccounted denominator fills. • This data set appears to not contain BSU or TSU information, so can’t use that to better approximate BMUJET. Artificial eta cuts must be used instead. • Ensure that events are not passing both the MET+Jets trigger and one of the BMU triggers. • Better accounting of reasons for NOT passing any trigger fits the stack more tightly into the denominator. • Removed artificial eta cuts on the new trigger bmujetMet. • Calculated numerical efficiencies. Wis Group Meeting 2

  3. Stack from last time • Still a few unaccounted for denominator fills. • Some bmujetMet hits may have counted as MET+Jets • Had artificial eta cuts on new trigger. Wis Group Meeting 3

  4. Phi of BMU muons • No reconstructed muon between 4.0<phi<5.5. Wis Group Meeting 4

  5. Revised Stack • Fewer unaccounted denominator fills. • Cut out W-muons with 4.0<phi<5.5 AND eta>1.0 (rough guess on my part) • bmujetMet expands and takes up some BMUJET events. • CMUP eff = 0.32; CMX eff = 0.11; CMU eff = 0.07; CMP eff = 0.08; • bmujetMet eff = 0.055; BMUJET eff = 0.01; MET2JET eff = 0.14; • IsoTrack eff = 0.11 Wis Group Meeting 5

  6. ZH->llbb • Repeat same analysis as for WH->lvbb: • The denominator cuts are: 2 generator-level muons with at least 18 GeV, 2 jets of at least 10 GeV, 1 of the jets has loose b-tag. • Since there are two Z-muons, there is a choice of what eta to fill. For now, I’m choosing the muon with lower magnitude of eta. • If both Z-muons are matched, isolated, high pt, and pass triggers, then I fill the one with lower eta. Wis Group Meeting 6

  7. First try at ZH-llbb • Choose b/w the 2 Z-muons by eta. • CMUPeff=0.45 • CMXeff=0.08 • CMUeff=0.07 • CMPeff=0.13 • bmujetMet eff=0.03 • BMUJET eff=0.004 • MET2JET eff=0.10 • IsoTrack eff=0.09 Wis Group Meeting 7

  8. Conclusion • Unless more issue are found, I’m concluding the study of WH events, and… • I’m moving on to ZH events • Instead of choosing between the two Z-muons by eta alone, I want to choose by trigger priority first and then by eta if they pass the same trigger. • Next steps • Finish for ZH->llbb events. • Revisit trigger rates Wis Group Meeting 8

More Related