Possibility of charmoniumlike state $X(3915)$ as ${\chi }_{c0}(2P)$ state

Ming-Xiao Duan, Si-Qiang Luo, Xiang Liu +1

In this work, we seriously discuss whether $X(3915)$ can be treated as a ${\chi }_{c0}(2P)$ state. Based on an unquenched quark model, we give the mass spectrum of the ${\chi }_{cJ}(2P)$ state…