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Meff Trigger Proposal

Meff Trigger Proposal. Motivation: Meff =HT+MHT represents “transverse scale” of an event more model independent than a single jet trigger with a high threshold it also allows for different mass splittings than, e.g. in mSuGra ( our current signal model)

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Meff Trigger Proposal

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  1. Meff Trigger Proposal • Motivation: • Meff=HT+MHT represents “transverse scale” of an event • more model independent than a single jet trigger with a high threshold • it also allows for different mass splittingsthan, e.g. in mSuGra(our current signal model) • for QCD which contributes most of the rate, a Meff trigger is ~equivalent to an HT trigger (no true missing energy) • for SUSY,MHT is a significant contribution to Meff • Therefore, a Meff trigger should allow a higher threshold than an HT trigger while still maintaining good signal efficiency • Observe event yields (=rates) comparable to HT200U for ~Meff220U - 230U calculated from 15U jets

  2. Data JetMET Event Selection: Reference (black): Meff=HT+MHT from all corrected jets with pt > 30 GeVand|eta|<3, Leading jet pt <100 GeV, 2nd jet pt>80 GeV Simulated Trigger: calculate HT and Meff from uncorrected jets with pt > 15 GeV Note: I require HLT_Jet50U in the JetMET dataset to be true HT Trigger Meff Trigger

  3. QCD PYTHIA6 Event Selection: Reference (black): Meff=HT+MHT from all corrected jets with pt > 30 GeVand|eta|<3, Leading jet pt <100 GeV, 2nd jet pt>80 GeV Simulated Trigger: calculate HT and Meff from uncorrected jets with pt > 15 GeV Note: to be consistent with data I require leading uncorrected jet pt > 50 GeV HT Trigger Meff Trigger

  4. LM0 Event Selection: Reference (black): Meff=HT+MHT from all corrected jets with pt > 30 GeVand|eta|<3, Leading jet pt <100 GeV, 2nd jet pt>80 GeV Simulated Trigger: calculate HT and Meff from uncorrected jets with pt > 15 GeV Note: to be consistent with data I require leading uncorrected jet pt > 50 GeV HT Trigger Meff Trigger

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