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

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.

Comments: 5 pages, Revtex, no figures