Dynamical analysis of the $X$ resonance contributions to the decay $J/\psi \to \gamma X\to \gamma \varphi \varphi$

A. A. Kozhevnikov

The dynamics of the $J^{PC}=0^{-+}$, $0^{++}$, and $2^{++}$ resonance contributions to the decay $J/\psi \to \gamma X(J^{PC})\to \gamma \varphi \varphi$ is analysed using the data obtained by BESIII collaboratio…