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TTbar τ + jets : Tau Selection Efficiency Study. William Edson SUNY at Albany Anirvan Sircar. Efficiency Equation Definitions. Selection Signal Efficiency: ε sig = 100 * Σ matched τ ’s passing selection / Σ total matched τ ’s Selection Background Efficiency:
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TTbarτ + jets:Tau Selection Efficiency Study William Edson SUNY at Albany AnirvanSircar
Efficiency Equation Definitions • Selection Signal Efficiency: εsig = 100 * Σ matched τ’s passing selection / Σ total matched τ’s • Selection Background Efficiency: εback = 100 * Σ unmatched τ’s passing selection / Σ total matched τ’s • ID Signal Efficiency εsig = 100 * Σ matched τ’s passing selection / Σ total matched τ’s prior to ID • ID Background Efficiency εsig = 100 * Σunmatched τ’s passing selection / Σ total matched τ’s prior to ID • When denominator = 0, set it to 1 • Tau matching via getTruthMatch function in TNtupleAnalyzer code • total matched determined during Object Selection • matched/unmatched during tau cut (C7)
Efficiency Study Results J0 – J3 • J0, J1 and J3 events all failed the cutflow prior to cut 7 and exhibited no matched taus during object selection
