1pm - 2pm: What can we learn from charm?

Charm decays offer a unique window into the dynamics of up-type quark transitions, and therefore stand as an important testing ground for the Standard Model and potential new physics. In this talk, I will discuss charm decays via charged weak currents. First, from (semi)leptonic decays, I will present an approach to extract CKM elements by global analyses of available experimental data and theoretical input, with a focus on V_cs. Then, I will turn to the more complex domain of hadronic decays, where theoretical predictions are more challenging due to strong interaction effects. Using SU(3)_F symmetry of QCD, and accounting for its breaking, I will discuss two-body charm meson decays, with a focus on final states including the eta’ and presenting branching ratio and CP violation predictions. By the end of this talk, I hope to have convinced you that charm decays remain an essential area of study in flavour physics, with many interesting puzzles to be understood!