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

Abstract

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 ($C=+$) and mass above 1 GeV through $\psi \to \gamma R\to \gamma \gamma V$. To get the information, one needs both high statistic data and partial wave analysis (PWA). While high statistic data will be available soon at CLEO-c and BES-III, here we provide theoretical PWA formulae for these $\psi$ double radiative decay channels in the covariant tensor formalism.

Comments: 9 pages, added references