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Missing Et in Z Candidates

Missing Et in Z Candidates. Z Candidate Selection ReReco with 10.08.01 Results without NADA Results with NADA Summary. Tom Diehl Nov 15th, 2001. Data & Event Selection. Data Sample: Root-tuples from t1.56 & p10.04 Selection Criteria (2 of ): ET(EM)>12.5 GeV Not ( Emfrac=1 & Iso=0)

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Missing Et in Z Candidates

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  1. Missing Et in Z Candidates • Z Candidate Selection • ReReco with 10.08.01 • Results without NADA • Results with NADA • Summary Tom Diehl Nov 15th, 2001

  2. Data & Event Selection • Data Sample: Root-tuples from t1.56 & p10.04 • Selection Criteria (2 of ): • ET(EM)>12.5 GeV • Not ( Emfrac=1 & Iso=0) • -0.05 < isol < 0.2 • 1.05 > Emfrac > 0.9 • H(41)<200 • Ratio (EfineHad/ETot) < 0.01 • Picked the raw data (123 events) stored at /usrdisks/714/fnal_3/diehl/run2/wze*/zcandidates/*.raw

  3. Reco 10.08.01 (No Nada) • MET is clumpy vs. Run Number • Later runs have lots less MET

  4. Reco 10.08.01 (No Nada) • SUM ET is clumpy vs. Run #, too. • Later runs have lots less SET

  5. Reco 10.08.01 (No Nada) • MET Details

  6. Reco 10.08.01 (Yes Nada) • Still clumpy w/ run number almost exactly the same values. Sum ET also.

  7. Reco 10.08.01 (Yes Nada) • MET details

  8. Muon Corrected MET • Some people are working to hustle it into existance.

  9. Summary • Looking at Z->ee candidates • Good News • There doesn’t seem to be significant damage on this data • Bad News • There doesn’t seem to be significant improvement to this data • Main Improvement seems to be polish applied directly from the control room and on detector.

  10. END of Presentation Beginning of storage slides

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