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We report on a theoretical study of the hidden charm $N^*_{c \bar{c}}$ statesin the $\gamma p \to \bar{D}^{*0} \Lambda^+_c$ reaction near threshold withinan effective Lagrangian approach. In addition to the contributions from the$s$-channel nucleon pole, the $t$-channel $D^0$ exchange, the $u$-channel$\Lambda^+_c$ exchange and the contact term, we study the contributions fromthe $N^*_{c \bar{c}}$ states with spin-parity $J^P = 1/2^-$ and $3/2^-$. Thetotal and differential cross sections of the $\gamma p \to \bar{D}^{*0}Lambda^+_c$ reaction are predicted. It is found that the contributions of these$N^*_{c \bar{c}}$ states give clear peak structures in the total crosssections. Thus, this reaction is another new platform to study the hidden-charmstates. It is expected that our model calculation may be tested by the futureexperiments.

Photoproduction of hidden-charm states in the $\gamma p \to \bar{D}^{*0} \Lambda^+_c$ reaction near threshold