BELLE2-TALK-DRAFT-2021-070 | |
BELLE2-TALK-CONF-2021-055 |
Ching-Hua Li
07 June 2021
FPCP 2021
Abstract: Charmless π΅ decays provide a unique portion of the Belle II program. The expected large signal yields with moderate backgrounds associated with efficient reconstruction of neutral particles enable world-leading determination of the CKM phase πΌ/π2, a conclusive understanding of the so-called K-π CP puzzle, and further insight into the nature of localized CP violation in three-body decays. We report preliminary measurements based on the sample collected during 2019-2020 operations and corresponding to 65 fbβ1 of integrated luminosity. Results include a test of the πΎπ isospin sum-rule, an angular analysis of π΅βπ+π0 decays, and the reconstruction of a π΅0βπ0π0 signal.
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