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Quark mixing renormalization effects in the determination of |V_{tq}|
High Energy Physics - Phenomenology · Submitted 30 Jan 2011
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim 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.
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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.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We study the numerical effects of several renormalization schemes of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix on the top-quark decay widths. | contribution 1.00 | 0.90 | 0.06 | asserted 0.77 |
| s1 | 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. | method 0.48 | 0.85 | 0.24 | asserted 0.92 |
| s2 | We also discuss the implications of these effects on the ratio R = Gamma(t -> Wb) / Gamma_t and the determination of |V_{tb}|^2. | interpretation 0.78 | 0.68 | 0.12 | unclear 0.54 |
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The paper
Original 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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What this paper does with the arXiv papers it cites
What it cites · 31 sentences without a confident label
Builds on 1 paper
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The purpose of this paper is to carry out such an analysis, which complements our previous study of hadronic $W$-boson decays [ref] .
Quark mixing renormalization effects in the determination of the CKM parameters |V_{ij}| · Introduction · 0.87
Uses the method or tool of 4 papers
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To assess the significance of quark mixing renormalization, we show in Table [ref] the values of $R$ obtained from Table [ref] using the renormalization prescriptions of Refs. [ref] .
A Novel Formulation of Cabibbo-Kobayashi-Maskawa Matrix Renormalization · The ratio $R=Γ(t→Wb)/Γ_t$ and $|V_tb|^2$ · 0.80
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To assess the significance of quark mixing renormalization, we show in Table [ref] the values of $R$ obtained from Table [ref] using the renormalization prescriptions of Refs. [ref] .
On-Mass-Shell Renormalization of Fermion Mixing Matrices · The ratio $R=Γ(t→Wb)/Γ_t$ and $|V_tb|^2$ · 0.80
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To assess the significance of quark mixing renormalization, we show in Table [ref] the values of $R$ obtained from Table [ref] using the renormalization prescriptions of Refs. [ref] .
Simple Approach to Renormalize the Cabibbo-Kobayashi-Maskawa Matrix · The ratio $R=Γ(t→Wb)/Γ_t$ and $|V_tb|^2$ · 0.80
Uses data or values from 5 papers
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For the top-quark mass, we use the most recent world average $m_t=173.1 GeV$ [ref] , while for $m_u$, $m_d$, and $m_b$, we employ representative values.
Combination of CDF and D0 Results on the Mass of the Top Quark · Top-quark partial decay widths · 1.00
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First observations of electroweak single top-quark production were reported by the CDF [ref] and D0 [ref] Collaborations, leading to: [equation] at the 95% confidence level.
Observation of Single Top Quark Production and Measurement of |Vtb| with CDF · Quark mixing renormalization effects on the determination of $|V_tq|$ · 0.90
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First observations of electroweak single top-quark production were reported by the CDF [ref] and D0 [ref] Collaborations, leading to: [equation] at the 95% confidence level.
Observation of Single Top-Quark Production · Quark mixing renormalization effects on the determination of $|V_tq|$ · 0.90
Compares with 1 paper
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We emphasize that we find full agreement with Ref. [ref] , provided we adopt the same values for the input parameters.
Electroweak Corrections to the Top Quark Decay · Top-quark partial decay widths · 1.00
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