Perturbative QCD estimation of the B → K∗ + γ branching ratio

Working in a perturbative QCD model approach, we obtain the essential form factor of the radiative transition B → V∗γ and estimate the branching ratio BR(B → K∗γ). The results are determined by a parameter expressing the momentum distribution in the B-meson wave function. Our estimations are compared to other theoretical predictions as well as to experimental data.