Comments on the Characteristic Measurables of the Quark Mixing Matrix
نویسنده
چکیده
Within the standard electroweak model we point out that the 3×3 matrix of quark mixing is characterized by three universal (rephasing-invariant) quantities: one of them for CP violation and the other two for off-diagonal asymmetries. Unitarity of the quark mixing matrix can in principle be tested through a variety of measurements which are irrelevant to the existence of CP -violating effects. PACS numbers: 12.15.Ff, 11.30.Er, 13.25.Hw E-mail address: [email protected] 1 In the standard electroweak model, the 3×3 Cabibbo-Kobayashi-Maskawa (CKM) matrix V provides a natural description of quark mixing and CP violation [1,2]. Unitarity is the only but powerful constraint, imposed by the model itself, on V . This restriction is commonly expressed as two sets of orthogonality-plus-normalization conditions:
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