Can the $\psi (4040)$ explain the peak associated with $Y(4008)$?

Milena Piotrowska, Francesco Giacosa, Peter Kovacs

We study the well-known resonance $\psi (4040)$, corresponding to a $3^3{S}_1$ charm-anticharm vector state $\psi (3S)$, within a QFT approach, in which the decay channels into $DD$, $D^…