Short-distance RG-analysis of $X(3872)$ radiative decays

D. A. S. Molnar, R. F. Luiz, R. Higa

We present a renormalization-group analysis of the $X(3872)$ radiative decays into $J/\psi \gamma$ and $\psi (2S)\gamma$. We assume a $D{\bar{D}}^{\ast }$ molecule for the $X$ long-distance structure an…