Study of charmless three-body B decays at Belle

by Yun-Tsung Lai (Univ. of Tokyo, Kavli IPMU)

Thursday 8 Sept 2022, 16:00 → 18:00 Australia/Sydney

Charmless three-body $B$ decays offers a key probe for the properties of the weak interaction associated with quarks.
The properties of such kind of decays, including the decay structure, interference, and localized CP asymmetry, can be studied experimentally using the Dalitz plot to unfold the multi-body phase space.
We use the data sample collected at the $\Upsilon(4S)$ with Belle detector and KEKB asymmetric energy $e^{+}e^{-}$ collider to perform studies on the $\overline{B}^{0} \to K^{0}_{S} K^{\pm} \pi^{\mp}$ and $B^{+} \to \pi^{+} \pi^{0} \pi^{0}$ decay. In addition to the inclusive measurement, we also perform further study on the decay structure with background-subtracted Dalitz plot using sPlot tool. Measurement results will be reported.