Sumitted to PubDB: 2023-03-30

Category: Talk, Visibility: Public

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Authors	Kazuki Kojima
Date	2023-03-29
Belle II Number	BELLE2-TALK-CONF-2023-027
Abstract	Persistent anomalies reported by various experiments in $b\to c$ and $b\to s\ell \ell$ transitions hint at possible violation of lepton-flavor universality. The Belle II experiment at the SuperKEKB collider probes the relevant effects using observables complementary to those explored elsewhere. This talk reports recent results from a sensitive search for ${\overline{B}}^{+}\to K^{+}\nu \overline{\nu }$ decays, and an inclusive determination of the branching fraction of bottom mesons into hadrons and tau leptons, relative to that into hadrons and light leptons.
Conference	International Conference on the Physics of the Two Infinities

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