QCD Sum Rule Analysis of a Compact $D^{+}{D}^{-}{K}^{+}$-Like Hidden-Charm Hexaquark with $J^P=0^{-}$

Jing-Yi Yan, Wen-Shuai Zhang, Liang Tang

In this work, we study a compact hexaquark configuration motivated by the same quark content as $D^{+}{D}^{-}{K}^{+}$ using QCD sum rules, where the $DDK$ system has been extensively…