Title：Study of charmless B decays at Belle
Time：2023/05/01 (Mon.) 12:30
Place：R517, New Physics Building, NTU

Abstract：
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 of 711 fb-1 collected at the Upsilon(4S) with Belle detector and KEKB asymmetric energy e+e- collider to perform studies on the B0-bar -> K_S K+ pi- and B+ -> pi+ pi0 pi0 decays. Their inclusive branching fraction and asymmetry are measured. Further studies on their decay structure are also performed with background-subtracted Dalitz plot using sPlot tool. The procedure of measurement and results will be described in this report.