2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/189222We argue that the recent CLEO-c data on $e^+e^-$ annihilation into pairs of charmed mesons at c.m. energy around 4.0 GeV are not well described by a single resonance $ψ(4040)$, but can be better understood if there is an additional narrow resonance with mass within few MeV from the $D^* {\bar D}^*$ threshold.9 pages, 1 figureHigh Energy Physics - Phenomenologytext