Speaker
Description
The LHCb has reported the observation of a resonancelike structure, the $P_c(4450)$, in the $J/\psi~p$ spectrum.
In our work, we discuss the feasibility of detecting this structure in $J/\psi$ photoproduction, e.g., in the measurement that has recently been approved for the CLAS12 experiment at JLab.
We take into account the experimental resolution effects, and perform a global fit to world $J/\psi$ photoproduction data, predicting that it will be possible to observe a sizable cross section close to the $J/\psi$ production threshold. We present a first estimate of the upper limit for the branching ratio of the $P_c(4450)$ into the $J/\psi~p$ channel, and we study the angular distributions of the differential cross sections. This will shed light on the nature and couplings of the $P_c(4450)$ structure in the future photoproduction experiments.
