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arXiv · hep-ph/9210260

Universal Evolution of CKM Matrix Elements

V. Barger·M. S. Berger·P. Ohmann
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Abstract

We derive the two-loop evolution equations for the Cabibbo-Kobayashi-Maskawa matrix. We show that to leading order in the mass and CKM hierarchies the scaling of the mixings $|V_{ub}|^2$, $|V_{cb}|^2$, $|V_{td}|^2$, $|V_{ts}|^2$ and of the rephase-invariant CP-violating parameter $J$ is universal to all orders in perturbation theory. In leading order the other CKM elements do not scale. Imposing the constraint $λ_b=λ_τ$ at the GUT scale determines the CKM scaling factor to be $\simeq 0.58$ in the MSSM.

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V. Barger, M. S. Berger, P. Ohmann. 1992-10-26. Universal Evolution of CKM Matrix Elements. https://doi.org/10.1103/physrevd.47.2038

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