X(3872) revisited: the roles of OPEP and the quark degrees of freedom

Sachiko Takeuchi, Yasuhiro Yamaguchi, Atsushi Hosaka +1

The $X(3872)$ is investigated by employing the quark-hadron hybrid model, that consists of the $c\bar{c}$ core, $D^{(\ast )}\bar{D}{}^{\ast }$, $J/\ddot{I}ˆ\ddot{I}‰$, and $J/\ddot{I}ˆ\ddot{I}$ two-meson states. Due to…