Final state interactions in B → Dϱ and B → D∗π decays

We analyze final state strong interaction effects in B → Dϱ and B → D∗π decays using the Regge model. We find that, due to the smallness of the contributions from the non-leading Regge trajectories (ϱ, f, π etc.), final state interaction phases are small if the Pomeron coupling to the charm quark is suppressed in comparison to lighter quarks. Our conclusion is that for B decays into states containing charm, final state interaction effects should play a minor role.