A method for measuring D^* electromagnetic form factors in e⁺e^- annihilation

We describe a method for measuring the electromagnetic form factors of the D^* meson at time-like momentum transfer in e⁺e^- annihilation. This is to study the joint angular distribution of the e⁺e^- → γ^* → D^*+ D^*1, D^*+ → D⁰π⁺, and D^*- → D⁰π^-processes. The magnitudes and relative phases of the charge,magnetic and quadrupole form factors can be determined. The method can also be applied to other vector particles. (authors)