Recent Belle II results related to anomalies in semileptonic and hadronic B decay

Sumitted to PubDB: 2022-07-29

Category: Talk, Visibility: Public

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Authors	Christoph Schwanda
Date	July 14, 2022
Belle II Number	BELLE2-TALK-CONF-2022-073
Abstract	The rate of semitauonic B decays has been consistently above theory expectations since these decays were first measured. Recently significant differences between the forward-backward asymmetry in B -> Denu and B -> Dmunu were also reported. Belle II data are well suited to probe these anomalies. The low-background collision environment along with the possibility of partially or fully reconstructing one of the two B mesons in the event offer high precision. This talk presents recent Belle II results on lepton flavor universality tests based on B->D(*)ell nu decays. We also discuss anomalies in hadronic B decay such as the 𝐾𝜋 puzzle and the 𝑏→𝐷(∗)ℎ branching fractions.
Conference	Quirks in quark flavour physics