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arXiv · 1101.5758

Quark mixing renormalization effects in the determination of |V_{tq}|

Andrea A. Almasy·Bernd A. Kniehl·Alberto Sirlin
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Abstract

We study the numerical effects of several renormalization schemes of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix on the top-quark decay widths. We then employ these results to infer the relative shifts in the CKM parameters |V_{tq}|^2 due to the quark mixing renormalization corrections, assuming that they are determined directly from the top-quark partial decay widths, without imposing unitarity constraints. We also discuss the implications of these effects on the ratio R = Gamma(t -> Wb) / Gamma_t and the determination of |V_{tb}|^2.

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Andrea A. Almasy, Bernd A. Kniehl, Alberto Sirlin. 2011-01-30. Quark mixing renormalization effects in the determination of |V_{tq}|. https://doi.org/10.1103/physrevd.83.096004

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