eeFACT 2025 - 70th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e– Colliders

Recent B physics results from Belle II

TUA01

4 Mar 2025, 09:00

30m

304 (EPOCHAL)

Invited Oral Presentation WG2 : Physics Physics

Speaker

Christoph Schwanda (Austrian Academy of Sciences)

Description

The Belle II experiment at the SuperKEKB energy-asymmetric $e^{+}{e}^{-}$ collider is a substantial upgrade of the $B$ factory facility at the Japanese KEK laboratory. Since the year 2019, Belle II has recorded close to 600 fb${}^{-1}$ at the center-of-mass energy of the $\mathrm{{\rm Y}}(4S)$ resonance. Together with the Belle data set, this is by far the world-largest sample of electron positron collision events at the $B\overline{B}$ threshold and allows measurements in the heavy flavour sector with unprecedented precision.

In this presentation, we will review the status of the Belle II experiment and showcase new results on $B$ meson and $\tau$ lepton decays.

Presentation materials

eefact_schwanda.pdf