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The CKM matrix and B physics

1992; IOP Publishing; Volume: 18; Issue: 10 Linguagem: Inglês

10.1088/0954-3899/18/10/001

1361-6471

J. L. Rosner,

High-Energy Particle Collisions Research

A review of present information on the Cabibbo-Kobayashi-Maskawa (CKM) matrix, describing weak charge-changing transitions among quarks, is presented. The status of direct measurements of magnitudes of elements is discussed briefly. The elements involving the top quark t can be probed indirectly via higher-order processes. Using data on B-B mixing and CP-violating K-K mixing, the author obtains regions of allowed parameters for elements of the CKM matrix. The range of allowed variation is large as a result of uncertainty about the B meson decay constant fB. Prospects for resolving the ambiguity are discussed. Finally, some preliminary results are presented of attempts to construct models of the CKM matrix.