Dispersive analysis of the $\mathbf{J}/\ddot{\mathbf{I}}ˆ\to {\hat{\mathbf{I}}}^3\ddot{\mathbf{I}}{€}^0\ddot{\mathbf{I}}{€}^0$ process

Bai-Long Hoid, Igor Danilkin, Anna Testa +1

We present a dispersive amplitude analysis of the low-energy $\ddot{I}{€}^0\ddot{I}{€}^0$ system in the radiative decay $J/\ddot{I}ˆ\to {\hat{I}}^3\ddot{I}{€}^0\ddot{I}{€}^0$, using the mass-independent BESIII $0^{++}$ and $2^{++}$ i…