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Radiative leptonic decay B → γℓνℓ with subleading power corrections

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Beneke, M. ; Braun, V. M. ; Ji, Yao ; Wei, Yan-Bing
License: Creative Commons Attribution 4.0
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Date of publication of this fulltext: 06 Apr 2021 15:23


We reconsider the QCD predictions for the radiative decay B → γℓνℓ with an energetic photon in the final state by taking into account the 1/Eγ , 1/mb power-suppressed hard-collinear and soft corrections from higher-twist B-meson light-cone distribution amplitudes (LCDAs). The soft contribution is estimated through a dispersion relation and light-cone QCD sum rules. The analysis of theoretical ...


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