Photoproduction of strange hidden-charm and hidden-bottom states

Xu Cao, Jian-Ping Dai, Zhi Yang

Recently BESIII collaboration discovered a charged strange hidden-charm state $Z_{cs}$(3985) in the $D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0$ spectrum. A higher $Z_{cs}^{\prime }$ state coupling to $\b…