# EPS-HEP2021 conference

26-30 July 2021
Zoom
Europe/Berlin timezone

## Study of hadronic $B$ and $B_s$ decays at Belle

26 Jul 2021, 18:15
15m
Zoom

#### Zoom

Parallel session talk Flavour Physics and CP Violation

Shawn Dubey

### Description

We report the first search for the penguin-dominated process $B_{s} \to \eta^{\prime} X_{s\bar{s}}$ using a semi-inclusive method. In absence of a statistically significant signal, we set a 90\% confidence-level upper limit $1.4 \times 10^{-3}$ on the partial branching fraction where $M(X_{s\bar{s}}) \leq 2.4\,{\rm GeV}$. We also report final results for the $B^{0}_{s} \to D_{s} X$ and $B^{0}_{s} \to \eta \eta^{\prime}$ decays. These results are obtained using $121.4\,{\rm fb}^{-1}$ data collected at the $\Upsilon(5S)$ resonance by the Belle experiment at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. Furthermore, we report on measurements involving three-body decays $B^{+} \to K^{+} K^{-} \pi^{+}$ and $B^{+} \to \pi^{+} \pi^{0} \pi^{0}$ based on the Belle data collected at the $\Upsilon(4S)$ resonance.

Collaboration / Activity Belle shohei.nishida@kek.jp S. Nishida

### Primary author

Shohei Nishida (BELLE (BELLE II Experiment))