Speaker
Description
A dynamical model has been developed, following the ANL-Osaka approach, to investigate the $J/\psi$ photo-production reaction on the nucleon. The photo-production mechanisms consists of the Pomeron-exchange and a phenomenological multi-gluon exchange calculated from Constituent quark model and $J/\psi$-$N$ potential deduced from LQCD. The final state interactions include the coupled-channel effects due to the unitarity condition imposed by the pion-nucleon total cross sections data. The results are compared with the predictions from the models based on Perturbative QCD and Generalized Parton Distribution, and the Holographic model. The predictions for future JLab experiments will be presented. The recent applications of ANL-Osaka amplitudes to analyze the data of pion production on nuclei will also be briefly reported.
