Renormalization of the Cabibbo-Kobayashi-Maskawa Matrix
Abstract
Using the on-shell scheme and the general linear Rxi gauge we have calculated the one-loop amplitude W+ -> uI dj. In agreement with previous work we have shown that the Cabibbo-Kobayashi-Maskawa (CKM) matrix ought to be renormalized. We show how to renormalize the CKM matrix and, at the same time, obtain a gauge independent W decay amplitude.
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