Combined constraints on CP-violation in the Standard Model and beyond

I review the status of CP violation in the Standard Model from the combination of flavour constraints within the CKMfitter frequentist approach and I describe studies of New Physics restricted to the ∆F = 2 sector to explain recent results on neutral-meson mixing. All results have been obtained using data available for the Winter 2012 conferences. 1. Standard Model global fit In the Standard Model (SM), the weak charged-current transitions mix different quark generations, which is encoded in the unitary Cabibbo-Kobayashi-Maskawa (CKM) matrix. In the case of three genera-tions of quarks, the physical content of this matrix re-duces to four real parameters, among which one phase, the only source of CP violation in the quark sector. These four real parameters are defined in an phase-convention independent way: λ2