A study of the B0 → Ksπ 0 decay and improved hadron identification at Belle II experiment at SuperKEKB.

The decay B0→Ksπ 0 is dominated by b→s loop amplitudes. Such flavourchanging-neutral-current transitions are highly suppressed in the standard model and provide an indirect route to search for new physics. In particular, the excellent neutralparticle reconstruction capability of Belle II experiment at SuperKEKB. allows aunique measurement of CP violation asymmetry in this neutral B-meson decay channeltowards testing an important isospin relation. We report preliminary results based on a simulation sample of the experiment. In the latter part, we discuss a particle identification framework developed for charged pions and kaons based on energy loss information in the silicon-strip vertex detector (SVD). The study is based on e+ecollision data recorded by the experiment and the results are compared with that of a Monte Carlo sample. The introduction of SVD information is found to improve the overall performance in the low-momentum region.