  Energy correlators are field-theoretically clean and phenomenologically
valuable probes of QCD dynamics. We explore the possibility of using the
information encoded in the energy correlators of a hadronically decaying
electroweak vector boson in order to extract its full decay density matrix. The
kinematics of the one- and two-point energy correlators can indeed discriminate
between longitudinal and transverse modes and reveal the interference pattern
between different vector polarizations. Such observables improve the
sensitivity to microscopic new physics affecting the production rate of the
different helicities. We assess the impact on higher dimensional EFT operators
in simple scenarios.
