NLL Corrections for B-Meson Radiative Exclusive Decays
Abstract
We calculate the next-to-leading corrections to the branching ratio of exclusive B K* γ decay. The renormalization scale dependence is reduced compared to the leading logarithmic result but there remains a dependence on a cutoff parameter of the hadronic model. The calculated corrections increase the predicted branching ratio by about 10%, but it remains in agreement with the experimental value.
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