How to trap a non-standard penguin? Isospin symmetry violations in B-decays with enhanced chromomagnetic dipole operator

A recently proposed non-standard model solution to the problem of low semileptonic branching ratio BSL which suggests a large branching ratio for the decay b → sg is critically examined. It is shown that the effects of the enhanced chromomagnetic dipole operator might lead to significant violations of isospin symmetry in rate radiative decays of B-mesons.