Quark mixing renormalization effects in the determination of |V_{tq}|
arXiv:1101.5758 · doi:10.1103/PhysRevD.83.096004
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.
10 pages, 3 tables
References in corpus (4)
- Observation of Single Top Quark Production and Measurement of |Vtb| with CDF
- Simultaneous measurement of the ratio B(t->Wb)/B(t->Wq) and the top quark pair production cross section with the D0 detector at sqrt(s)=1.96 TeV
- Simple On-Shell Renormalization Framework for the Cabibbo-Kobayashi-Maskawa Matrix
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