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

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

2011-01-30

arxiv.org/abs/1101.5758v1

Phys.Rev.D83:096004,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 tables

Scientific paper

10.1103/PhysRevD.83.096004

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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