Pure Leptonic Radiative Decays $B^\pm, D_s\to\ellνγ$ and the Annihilation Graph

preprint1994arXivOpen access

Pure leptonic radiative decays of heavy-light mesons are calculated using a very simple non-relativistic model. Dominant contribution originates from photon emission from light initial quark. We find $BR(B^\pm\to\ellνγ)\sim3.5\times10^{-6}$ and $BR(D_s\to \ellνγ)\sim1.7 \times10^{-4}$ . The importance of these reactions to clarify the dynamics of the annihilation graph is emphasized.

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Pure Leptonic Radiative Decays $B^\pm, D_s\to\ellνγ$ and the Annihilation Graph

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Pure Leptonic Radiative Decays B±,Ds→ℓνγB^\pm, D_s\to\ellνγB±,Ds​→ℓνγ and the Annihilation Graph

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Pure Leptonic Radiative Decays $B^\pm, D_s\to\ellνγ$ and the Annihilation Graph