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Annihilation-Type Charmless Radiative Decays of B Meson in Non-universal Z^\prime Model
High Energy Physics - Phenomenology · Submitted 12 Feb 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Within the allowed parameter space, the branching ratios of these decay modes can be enhanced remarkably in the non-universal $Z^\prime$ model: The branching ratios can reach to $\mathcal{O}(10^{-8})$ for $\bar B_s^0 \to \rho^0(\omega)\gamma$ and $\mathcal{O}(10^{-10})$ for the $\bar B_d^0 \to \phi \gamma$, which are large enough for LHC-b and/or Super B-factories to detect those channels in near future.
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The abstract, sentence by sentence
We study charmless pure annihilation type radiative B decays within the QCD factorization approach. After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of $\bar{B}^0_d\to\phi\gamma$, $\bar{B}^0_s\to\rho^0\gamma$ and $\bar{B}^0_s\to\omega\gamma$ within the standard model are at the order of $\mathcal{O}(10^{-12})$, $\mathcal{O}(10^{-10})$ and $\mathcal{O}(10^{-11})$, respectively. The smallness of these decays in the standard model makes them sensitive probes of flavor physics beyond the standard model. To explore their physics potential, we have estimated the contribution of $Z^\prime$ boson in the decays. Within the allowed parameter space, the branching ratios of these decay modes can be enhanced remarkably in the non-universal $Z^\prime$ model: The branching ratios can reach to $\mathcal{O}(10^{-8})$ for $\bar B_s^0 \to \rho^0(\omega)\gamma$ and $\mathcal{O}(10^{-10})$ for the $\bar B_d^0 \to \phi \gamma$, which are large enough for LHC-b and/or Super B-factories to detect those channels in near future. Moreover, we also predict large CP asymmetries in suitable parameter space. The observation of these modes could in turn help us to constrain the $Z'$ mass within the model.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We study charmless pure annihilation type radiative B decays within the QCD factorization approach. | contribution 0.95 | 0.92 | 0.03 | asserted 0.89 |
| s1 | After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of $\bar{B}^0_d\to\phi\gamma$, $\bar{B}^0_s\to\rho^0\gamma$ and $\bar{B}^0_s\to\omega\gamma$ within the standard model are at the order of $\mathcal{O}(10^{-12})$, $\mathcal{O}(10^{-10})$ and $\mathcal{O}(10^{-11})$, respectively. | result 1.00 | 0.93 | 0.06 | asserted 1.00 |
| s2 | The smallness of these decays in the standard model makes them sensitive probes of flavor physics beyond the standard model. | interpretation 0.96 | 0.23 | 0.05 | asserted 0.98 |
| s3 | To explore their physics potential, we have estimated the contribution of $Z^\prime$ boson in the decays. | contribution 0.79 | 0.91 | 0.04 | asserted 0.90 |
| s4 | Within the allowed parameter space, the branching ratios of these decay modes can be enhanced remarkably in the non-universal $Z^\prime$ model: The branching ratios can reach to $\mathcal{O}(10^{-8})$ for $\bar B_s^0 \to \rho^0(\omega)\gamma$ and $\mathcal{O}(10^{-10})$ for the $\bar B_d^0 \to \phi \gamma$, which are large enough for LHC-b and/or Super B-factories to detect those channels in near future. | result 0.98 | 0.92 | 0.81 | asserted 0.53 |
| s5 | Moreover, we also predict large CP asymmetries in suitable parameter space. | result 1.00 | 0.89 | 0.10 | asserted 0.82 |
| s6 | The observation of these modes could in turn help us to constrain the $Z'$ mass within the model. | interpretation 0.97 | 0.42 | 0.18 | hedged possibility 1.00 |
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The paper
Original abstract
We study charmless pure annihilation type radiative B decays within the QCD factorization approach. After adding the vertex corrections to the naive factorization approach, we find that the branching ratios of $\bar{B}^0_d\to\phi\gamma$, $\bar{B}^0_s\to\rho^0\gamma$ and $\bar{B}^0_s\to\omega\gamma$ within the standard model are at the order of $\mathcal{O}(10^{-12})$, $\mathcal{O}(10^{-10})$ and $\mathcal{O}(10^{-11})$, respectively. The smallness of these decays in the standard model makes them sensitive probes of flavor physics beyond the standard model. To explore their physics potential, we have estimated the contribution of $Z^\prime$ boson in the decays. Within the allowed parameter space, the branching ratios of these decay modes can be enhanced remarkably in the non-universal $Z^\prime$ model: The branching ratios can reach to $\mathcal{O}(10^{-8})$ for $\bar B_s^0 \to \rho^0(\omega)\gamma$ and $\mathcal{O}(10^{-10})$ for the $\bar B_d^0 \to \phi \gamma$, which are large enough for LHC-b and/or Super B-factories to detect those channels in near future. Moreover, we also predict large CP asymmetries in suitable parameter space. The observation of these modes could in turn help us to constrain the $Z'$ mass within the model.
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How the literature uses it
6 arXiv papers cite this in 7 sentences
Papers citing it · 5 sentences without a confident label
Cites it as background 2 papers
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The relevant studies in the context of B physics have also been extensively performed in Refs. [ref] .
The effects of a family non-universal Z-prime boson on B--->pipi decays · Formalism of the family non-universal $Z^'$ model · 0.97
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The phenomenological effects of $Z^'$ in $B$ decays have been studied extensively [ref] .
Study of $B_s \to \phi (\rho^0, \omega)$ Decays in Standard Model and Family Non-universal $Z^\prime$ Model · Introduction · 0.89
What it cites · 17 sentences without a confident label
Uses the method or tool of 1 paper
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To achieve the goal, the QCD factorization framework [ref] proposed by Beneke, Buchalla, Neubert and Sachrajda is very suitable to be applied.
QCD Factorization for $B\to\pi\pi$ Decays: Strong Phases and CP Violation in the Heavy Quark Limit · Calculation in the Standard Model · 1.00
Cites as background 13 papers
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In this work, we explore the decay $B→ϕγ$ and similarly the decay $B_s^0→ρ^0 (ω) γ$ in the non-universal $Z^'$ model [ref] , which could be naturally derived in certain string constructions [ref] , E6 models [ref] and so on.
GIM Violation and New Dynamics of the Third Generation · Introduction · 0.90
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In this work, we explore the decay $B→ϕγ$ and similarly the decay $B_s^0→ρ^0 (ω) γ$ in the non-universal $Z^'$ model [ref] , which could be naturally derived in certain string constructions [ref] , E6 models [ref] and so on.
Flavor Changing Effects in Theories with a Heavy Z' Boson with Family Non-Universal Couplings · Introduction · 0.90
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In this work, we explore the decay $B→ϕγ$ and similarly the decay $B_s^0→ρ^0 (ω) γ$ in the non-universal $Z^'$ model [ref] , which could be naturally derived in certain string constructions [ref] , E6 models [ref] and so on.
Z', new fermions and flavor changing processes, constraints on E$_6$ models from $\mu$ --> eee · Introduction · 0.90
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