SLIDE 1
Electron-faking-tau veto
Alex Tuna Ryan Reece Brig Williams
University of Pennsylvania
February 25, 2013 On behalf of Tau WG
Tuna Electron-faking-tau veto 1
Signal efficiency 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Background efficiency
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10
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10
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10
- 1
10
| < 0.80 η | ≤ 0.00 | < 1.37 η | ≤ 0.80 | < 1.52 η | ≤ 1.37 | < 2.00 η | ≤ 1.52 | η | ≤ 2.00 ATLAS Internal Simulation = 8 TeV s TauEleBDT Winter 2013
Background efficiency as a function of signal efficiency with a Boosted Decision Tree (BDT) algorithm for 1-prong τhad–vis candidates with pT > 15 GeV and |η| < 2.5. The signal efficiency is obtained using Z/ γ⋆ → ττ simulated events. The background efficiency is obtained using Z/ γ⋆ → ee simulated events. Candidates are required to pass loose tau identification and not overlap with reconstructed electron candidates which pass tight electron identification within a ∆R-cone of 0.4. Signal (background) candidates are further required to overlap with a truth τhad–vis (electron).
Tuna Electron-faking-tau veto 2