22nd Conference on Flavor Physics and CP Violation (FPCP 2024)

Precision measurements of τ lepton decays at Belle II

27 May 2024, 14:15

15m

Chulalongkorn University

Parallel session Rare decays of hadrons and leptons Parallel - 2

Speaker

Marcela Garcia Hernandez

Description

The Belle II experiment has collected a 424fb${}^{-1}$ sample of $e^{+}{e}^{-}$ collision data at center-of-mass energies near the resonances $\mathrm{{\rm Y}}(nS)$. This sample contains 389 million $e^{+}{e}^{-}\to {\tau }^{+}{\tau }^{-}$ events, which we use for precision tests of the standard model. In this talk, we focused on the measurements of the tau-lepton mass and
tests of Lepton Flavor Universality (LFU) between electrons and muons.

Presentation materials

FPCP_tauprecision_v2_MG.pdf