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The European Physical Journal C

, Volume 69, Issue 1–2, pp 139–146 | Cite as

Annihilation-type charmless radiative decays of B meson in non-universal Z′ model

  • Juan Hua
  • C. S. KimEmail author
  • Ying Li
Regular Article - Theoretical Physics

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 \(\overline{B}^{0}_{d}\to\phi\gamma\), \(\overline{B}^{0}_{s}\to\rho^{0}\gamma\) and \(\overline{B}^{0}_{s}\to\omega\gamma\) 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′ 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′ model: The branching ratios can reach to \(\mathcal{O}(10^{-8})\) for \(\overline{B}_{s}^{0}\to \rho^{0}(\omega)\gamma\) and \(\mathcal{O}(10^{-10})\) for the \(\overline{B}_{d}^{0}\to \phi \gamma\), 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.

Keywords

Decay Mode High Energy Phys Weak Phase Exotic Quark Naive Factorization 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2010

Authors and Affiliations

  1. 1.Department of PhysicsYantai UniversityYantaiChina
  2. 2.Department of Physics and IPAPYonsei UniversitySeoulKorea

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