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

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

2001-04-11

arxiv.org/abs/hep-ph/0104111v1

Phys.Lett. B516 (2001) 61-64

Physics

High Energy Physics

High Energy Physics - Phenomenology

revtex, 4 pages

Scientific paper

10.1016/S0370-2693(01)00931-5

We argue that the factorizable $c\bar c$ long- and short-distance
contributions to the $B\to K^*\gamma$ 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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