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Renormalization of the Cabibbo-Kobayashi-Maskawa Matrix

A. Barroso·L. Brucher·R. Santos
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Abstract

Using the on-shell scheme and the general linear R_xi gauge we have calculated the one-loop amplitude W+ -> u_I d_j. 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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A. Barroso, L. Brucher, R. Santos. 2000-05-17. Renormalization of the Cabibbo-Kobayashi-Maskawa Matrix. https://doi.org/10.1103/physrevd.62.096003

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