CP violation in charm has only been observed in a single measurement, the difference in CP asymmetries in decays of neutral charm mesons to dipion and dikaon final states, with the likely source of the CP violation in the dipion final states. It is thus critical to explore additional final states in order to understand if the CP violation can be accommodated within the standard model or not. For this collider cross-talk, the decay of the neutral charm to a pair of short-lived neutral kaons will be discussed, with both the theory interest in these decays and how experimental challenges have been overcome using novel strategies in exploiting the new LHCb detector and its fully software trigger system.
Speakers
Stefan Schacht (Durham, Theory) is an Assistant Professor and Ernest Rutherford Fellow at the IPPP, Durham University. Previously, after obtaining his PhD from TU Dortmund University, Stefan held postdoctoral research positions at Karlsruhe, Turin and at Cornell University, and was a Stephen Hawking Fellow at the University of Manchester. Stefan's research focuses on theoretical quark flavour physics and CP violation.
Lorenzo Pica (Pisa, LHCb) is an experimental physicist at CERN and a member of the LHCb Collaboration. He currently holds a postdoctoral position at the Scuola Normale Superiore in Pisa. His research focuses on charm CP-violation measurements within the charm working group and on the development of the LHCb trigger system. He earned his PhD at the Scuola Normale Superiore in 2025 with a thesis on novel trigger strategies for the LHCb Upgrade I detector and on the measurement of the CP asymmetry in D0→KSKS decays, using Run 3 data collected by LHCb with the newly developed triggers.