Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Tests of symmetries and conservation laws
First Results and Prospects for 흉 Lepton Physics at Belle II
T. Kraetzschmar* and  On behalf of the BELLE II collaboration
Full text: pdf
Pre-published on: March 02, 2022
Published on: May 24, 2022
Abstract
Belle II has a comprehensive $\tau$ physics program, particularly in precision measurements of $\tau$ lepton properties and in searches for lepton flavour and lepton number violations. Belle~II profits from the relatively large $\tau$-pair production rate in the low background environment of $e^+e^-$ -collisions at 10.58~GeV.
Up to mid-2021, Belle~II collected a sample corresponding to $214~\text{fb}^{-1}$ of data.
We present a first measurement of the $\tau$ mass, prospects for the $\tau$-lifetime measurement, and we review the overall $\tau$ lepton physics program of Belle~II.
DOI: https://doi.org/10.22323/1.380.0425
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