PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Parallel: Operation, Performance and Upgrade of Present Detectors
Track reconstruction efficiency measurement using e+e- → τ+τ- events at Belle II
L. Zani
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Pre-published on: January 07, 2021
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We present the Belle II track reconstruction efficiency and Monte Carlo efficiency correction factors using $\tau$-pair events, in which one $\tau$ lepton decays leptonically ($\tau \rightarrow l \nu\nu$, $l = e, \mu$) while the other decays hadronically into three charged pions ($\tau \rightarrow 3\pi\nu + n\pi^{0}$). These measurements are performed using the $e^{+}e^{-}$ collision data recorded during the 2019 data taking periods, corresponding to a total integrated lumnosity of $8.8$~fb$^{-1}$.
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