CKM Matrix : Present and Future a

We review the present status of the CKM matrix and we offer some visions of its future. After a brief presentation of the theoretical framework for weak decays we discuss the following topics: i) CKM matrix from tree level decays, ii) Standard analysis of the unitarity triangle, iii) CKM matrix from rare and CP violating Kand B-decays, iv) CKM matrix from CP violation in twobody B-decays. In particular we compare the CKM potentials of the standard analysis of the unitarity triangle, of the very clean K → πνν̄ decays and of CP asymmetries in B-decays. Invited talk given at the ”Symposium on Heavy Flavours”, Santa Barbara, July 7 July 11, 1997, to appear in the proceedings. CKM MATRIX: PRESENT AND FUTURE ANDRZEJ J. BURAS Technische Universität München, Physik Department, D-85748 Garching, Germany We review the present status of the CKM matrix and we offer some visions of its future. After a brief presentation of the theoretical framework for weak decays we discuss the following topics: i) CKM matrix from tree level decays, ii) Standard analysis of the unitarity triangle, iii) CKM matrix from rare and CP violating Kand B-decays, iv) CKM matrix from CP violation in two-body B-decays. In particular we compare the CKM potentials of the standard analysis of the unitarity triangle, of the very clean K → πνν̄ decays and of CP asymmetries in B-decays.