NLL Corrections for B-Meson Radiative Exclusive Decays

Details NLL Corrections for B-Meson Radiative Exclusive Decays NLL Corrections for B-Meson Radiative Exclusive Decays

1999-05-20

arxiv.org/abs/hep-ph/9905412v1

Phys.Lett. B470 (1999) 223-232

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 8 figures

Scientific paper

10.1016/S0370-2693(99)01304-0

We calculate the next-to-leading corrections to the branching ratio of exclusive $B\to K^* \gamma$ 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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