Chiral perturbation theory for φ → ϱγγ and φ → ωγγ

We predict differential decay distributions for φ → ϱγγ and φ → ωγγ using chiral perturbation theory. We also consider the isospin violating decay φ → ωπ0. Experimental information on these decays can be used to determine couplings in the heavy vector meson chiral Lagrangian.