A realistic event generator for studies of coherent J/psi photoproduction off light nuclei at the EIC*

An important part of the design and design verification of detectors for the future U.S. Electron Ion Collider(EIC) is performing simulation studies of detector resolutions and expected yields. Realistic event generators for reactions of interest are being used to provide input events for the simulations. Coherent J/psi photoproduction is an important tool for gluon imaging of nucleons and nuclei. While this process has been extensively studied for protons and heavy nuclei at the EIC, not much has been done for light nuclei. In this work, we implemented new methods in an existing phase-space generator to produce events for coherent J/psi photoproduction in collisions of an electron and a light ion beam distributed according to the charge form factor of the nucleus. Theoretical calculations of charge form factors for He3, He4, Li6, C12, and O12 for discrete values of momentum transfer were saved in numerical tables and used as input. The generator allows the user to select either the hit-and-miss or the simple integration method for event sampling. In this presentation, we will show generated event samples for various nuclei and beam energies according to each method and will discuss future developments.