Key points are not available for this paper at this time.
The CKM angle is important for testing the unitarity of the CKM matrix and searching for new physics. can be extracted by the interference between b u and b c in the B factory such as LHCb and Belle-II. Determining also needs strong parameter information from the charm factory, such as the BESIII experiment. With quantum-correlated data samples collected at BESIII, the uncertainties from the charm sector can be highly suppressed.
Xiaokang Zhou (Tue,) studied this question.