Youngjoon Kwon

15 June 2023
XVI International Conference on Interconnections between Particle Physics and Cosmology (PPC 2023)

Abstract: Recently there have been much interest with the so-called B-physics anomalies or tensions from B-factory experiments, including Belle, Belle II, BaBar, and LHCb experiments. Some of them are related with the lepton flavor universality, while there are other tensions e.g. in the CKM matrix element $V_{cb}$ and $V_{ub}$. Also, in the past, there was a tension in the direct CP asymmetry in $B \to K \pi$ decays. In this talk, we review the current experimental status of such anomalies and related subjects in $B$ decays from the existing measurements, and present the prospects.

Note: Originally assigned for 25+5 min, but as one of the talk in the same session is cancelled, the organizer gave me more time (~10 min.). As the organizer wanted me to cover at least one result from LHCb, I added a single page for LHCb R(D*)-R(D) result, showing a plot from their paper. As I sit through the conference for the first three days, I find the audience may need somewhat gentler intro, so I added a few pages on it. Otherwise, the physics contents from Belle II and Belle have not been changed. (I moved the B->D*lnu for Vcb to Appendix.)