PoS - Proceedings of Science
Volume 445 - 21st Conference on Flavor Physics and CP Violation (FPCP2023) - Rare decays of hadrons and leptons
Status and prospects for rare B decays at Belle and Belle II
G. de Marino*  on behalf of the Belle and Belle II collaborations
Full text: pdf
Pre-published on: October 16, 2023
Published on: November 14, 2023
Rare $B$ decays are at the forefront of Belle II physics program. As the Belle II experiment concludes four years of data taking, collecting a sample of ${424}\,{\rm fb}^{-1}$, first results on rare $B$ decays have already been shown since 2021. The latest is the inclusive $\mathcal{B}(B\!\to\!X_s \gamma)$ measurement, described in this document. We then summarize the results related to $b\!\to\!s\ell\bar{\ell}\,(\ell\!=\!e,\mu,\tau,\nu)$ decays and provide the projections at higher statistics. Finally, we present two recent Belle searches of lepton flavor violating $b\!\to\!s\tau\ell$ transitions.
DOI: https://doi.org/10.22323/1.445.0008
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