PoS - Proceedings of Science
Volume 390 - 40th International Conference on High Energy physics (ICHEP2020) - Parallel: Quark and Lepton Flavour Physics
Leptonic and semileptonic decays with taus at the Belle II experiment
M. Milesi* and  On behalf of the BELLE II collaboration
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Pre-published on: February 24, 2021
Published on: April 15, 2021
Abstract
Lepton flavour universality as predicted by the Standard Model is challenged by various measurements of $B$-meson decays involving tau and charged light leptons. The Belle II experiment started recording first collision data in spring 2018 and offers a unique laboratory to study lepton flavour universality in leptonic and semileptonic $B$ decays at high precision. Here we report the status of establishing first measurements of (semi) tauonic $B$ decays and preliminary results of the $B\to\tau\bar{\nu}_{\tau}$ channel using the available Belle II data, and discuss the future potential of investigating $R(D^{(*)})$ anomalies.
DOI: https://doi.org/10.22323/1.390.0402
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