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arXiv · 0901.0114

A Novel Formulation of Cabibbo-Kobayashi-Maskawa Matrix Renormalization

Bernd A. Kniehl·Alberto Sirlin
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Abstract

We present a gauge-independent quark mass counterterm for the on-shell renormalization of the Cabibbo-Kobayashi-Maskawa (CKM) matrix in the Standard Model that is directly expressed in terms of the Lorentz-invariant self-energy functions, and automatically satisfies the hermiticity constraints of the mass matrix. It is very convenient for practical applications and leads to a gauge-independent CKM counterterm matrix that preserves unitarity and satisfies other highly desirable theoretical properties, such as flavor democracy.

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Bernd A. Kniehl, Alberto Sirlin. 2008-12-31. A Novel Formulation of Cabibbo-Kobayashi-Maskawa Matrix Renormalization. https://doi.org/10.1016/j.physletb.2009.02.024

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