2010/02/12 by Juan Hua, C. S. Kim, C. s Kim +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-010-1395-2
published as Eur.Phys.J.C69:139-146,2010 · 13 pages, 8 figures
arxiv created 2010/02/12 · openalex publication_date 2010/08/02 · arxiv updated 2011/02/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 B0d→ϕγ, B0s→ρ0γ and B0s→ωγ within the standard model are at the order of O(10-12), O(10-10) and 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 O(10-8) for Bs0 → ρ0(ω)γ and O(10-10) for the Bd0 → ϕγ, 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.