Volume 443 -
20th International Conference on B-Physics at Frontier Machines (BEAUTY2023) -
Main session
Recent Belle II results related to B anomalies
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Published on:
November 07, 2024
Abstract
Semileptonic π΅-meson decays involving the quark transition $b\to cl\nu$ provide excellent sensitivity to probe potential lepton-flavour universality violation. This work introduces two recent measurements related to tests of light-lepton flavour universality using a data sample collected at the $\Upsilon$(4π) resonance on the Belle II experiment corresponding to an integrated luminosity of 189fb$^{β1}$. Measurement of the ratio of the branching fractions of inclusive $B\to Xe\nu_e$ and $B\to X\mu\nu_{\mu}$ decays and measurement of angular asymmetries of $B^0\to D^{*-}l\nu$ decays agree well with standard model expectation.
DOI: https://doi.org/10.22323/1.443.0020
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.