Dispersive analysis of the $\gamma \gamma \to D\bar{D}$ data and the confirmation of the $D\bar{D}$ bound state

Oleksandra Deineka, Igor Danilkin, Marc Vanderhaeghen

In this paper, we present a data-driven analysis of the $\gamma \gamma \to D^{+}{D}^{-}$ and $\gamma \gamma \to D^0{\bar{D}}^0$ reactions from threshold up to 4.0 GeV in the $D\bar{D}$ invariant mass. For the $S$…