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QUARK MIXING AND CP VIOLATION — THE CKM MATRIX
I summarize the theoretical progress in the determination of the CKM elements since Lepton-Photon 2003 and present the status of the elements and parameters of the Cabibbo-Kobayashi-Maskawa (CKM) matrix. One finds |V us | = 0.2227 ± 0.0017 from K and τ decays and |V cb | = (41.6 ± …