Covariant tensor formalism for partial wave analyses of $\psi$ decays into $\gamma \gamma V$

Sayipjamal Dulat, Bing-Song Zou, Ji-Min Wu

The double radiative decays $\psi \to \gamma \gamma V$ with $V\equiv \rho ,\omega ,\varphi$ have a potential to provide information on the flavor content of any meson resonances (R) with positive charge parity ($C…