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Role of gauge invariance in B -> V gamma radiative weak decays

Riazuddin

hep-pharXiv:hep-ph/0110328

Abstract

The role of gauge invariance in calculating B -> V gamma radiative weak decays is clarified. It is shown that the gauge invariance severely restricts the contributions mediated by the usual weak non-leptonic Hamiltonian dominated by u and c quaks with one photon attachment. Such contributions are found to be almost negligible.

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