BMU Triggers for Higgs Muon Categorization for Triggering
BMU Triggers for Higgs Muon Categorization for Triggering III Jason Nett BEACH 04 Wisconsin Group. J. Meeting Piedra. June 2 th, 2008 1
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 bmujet. Met. Calculated numerical efficiencies. Wis Group Meeting 2
Stack from last time Still a few unaccounted for denominator fills. Some bmujet. Met hits may have counted as MET+Jets Had artificial eta cuts on new trigger. Wis Group Meeting 3
Phi of BMU muons No reconstructed muon between 4. 0<phi<5. 5. Wis Group Meeting 4
Revised Stack Fewer unaccounted denominator fills. Cut out Wmuons with 4. 0<phi<5. 5 AND eta>1. 0 (rough guess on my part) bmujet. Met expands and takes up some BMUJET events. CMUP eff = 0. 32; CMX eff = 0. 11; CMU eff = 0. 07; CMP eff = 0. 08; bmujet. Met eff = 0. 055; BMUJET eff = 0. 01; MET 2 JET eff = 0. 14; Wis Group Meeting Iso. Track eff = 0. 11 5
ZH->llbb Repeat same analysis as for WH->lvbb: The denominator cuts are: 2 generator-level muons with at least 18 Ge. V, 2 jets of at least 10 Ge. V, 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
First try at ZH-llbb Choose b/w the 2 Z-muons by eta. Wis Group Meeting 7
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
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