Abstract:Using the perturbative QCD approach, we studied the effects from hadronic structure of photon on B → φγ and B s → (ρ 0 , ω)γ decays, which are called the pure annihilation rediative decays. These decays have small branching fractions due to the power suppression by the Λ/m B , which make them very sensitive to the nextleading power corrections. The quark components and the related two-particle distribution amplitudes of a final state photon are introduced. The branching fractions can be enhanced remarkably by … Show more
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