CPV in charm decays at Belle II

Tuesday 22 Sept 2026, 12:30 → 13:30 America/Los_Angeles

48/2-224 - Madrone (SLAC)

Charge-Parity violation (CPV) plays a fundamental role in modern physics. It was first experimentally discovered in kaon decays in 1964 at BNL. The underlying mechanism was established only in the 2000s, when the Kobayashi-Maskawa theory (1973) was verified through studies of B mesons at the Belle and BaBar experiments.

In the charm sector, however, the Standard Model predicts that CPV should be very small. The first observation of CP violation in charm decays was reported only recently, in 2019 by the LHCb experiment. CPV in charm decays thus serves as a sensitive probe for new physics, particularly if the observed violation exceeds predictions from the Kobayashi-Maskawa mechanism.

In this talk, I will present two analyses of CP violation in charm decays using data collected by the Belle II experiment, conducted by me and my collaborators. I will also highlight our detector R&D efforts aimed at supporting and enhancing the precision of these measurements.

https://stanford.zoom.us/j/98973156241?pwd=cEU5RFdlVXoyc0JTeTlDMkozKzQ5UT09