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Boosted Ttbar Resonance Search Update

Boosted Ttbar Resonance Search Update. Ken Johns, Venkat Kaushik, Finn O’Grady, Sam Silva, Jason Veatch (U. Arizona). Status. Continued work on cut flows Updated expected ttbar and W+jets events with different b-tagging algorithms

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Boosted Ttbar Resonance Search Update

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  1. Boosted Ttbar Resonance Search Update Ken Johns, Venkat Kaushik, Finn O’Grady, Sam Silva, Jason Veatch (U. Arizona)

  2. Status • Continued work on cut flows • Updated expected ttbar and W+jets events with different b-tagging algorithms • Posted/will post numbers Sarah requested with ele SF, muo SF, LAr hole separately for full ttbar sample • Do boosted ttbar D3PD’s have 10x less statistics than resolved? • Would still like to do expected background comparison (shown last week) with some groups • QCD estimate in e+jets done

  3. B-tag Study • Expected number of events for 1fb-1

  4. Status • Systematics for limit setting • D4PD’s produced for • JES • Lepton trigger, ID, reco, p/E scale, p/E resolution • ISR/FSR • Parton shower/fragmentation • Still to make • JER, BJES • b-tagging • MC generator • Pileup

  5. ttbar Reconstruction (Zp) • Shown before but beginning to collect plots for the note

  6. ttbar Reconstruction (Zp)

  7. ttbar Reconstruction (KKg)

  8. ttbar Reconstruction (KKg)

  9. Upcoming Week • QCD estimate for muons • Limit setting for statistical only and partial systematics • Need remaining Zp and KKg D3PD’s to be produced (if not existing)

  10. Observed versus Expected (1.04 fb-1) • No b-tag with all SF, etc.

  11. Observed versus Expected (1.04 fb-1) • b-tag (SV0) with all SF, etc.

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