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On vanishing of the factorizable $c\bar c$ contribution in the radiative $B \to K^*γ$ decay

D. Melikhov
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Abstract

We argue that the factorizable $c\bar c$ long- and short-distance contributions to the $B\to K^*γ$ amplitude vanish, separately, if defined in a gauge-invariant way. Therefore, the $c\bar c$ states contribute to the radiative decay only through the non-factorizable soft-gluon exchanges.

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D. Melikhov. 2001-04-11. On vanishing of the factorizable $c\bar c$ contribution in the radiative $B \to K^*γ$ decay. https://doi.org/10.1016/s0370-2693(01)00931-5

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