An Isobar Model for Eta-Prime Meson Photoproduction on the Nucleon with Nucleon Resonances up to Spin-7/2 Billie Rizky, Dzulfiqar Fauzan Rabbani, Agus Salam, Imam Fachruddin
Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia
Abstract
We have investigated eta-prime meson photoproduction on the nucleon using an isobar model within an effective Lagrangian approach. This model incorporates background contributions, including Born terms and relevant vector meson exchanges, as well as the effects of intermediate nucleon resonances. Nucleon resonances with spin up to 7/2 and at least two-star status in the 2024 edition of the Review of Particle Physics (RPP) by the Particle Data Group (PDG) were included in the model. The free parameters of the model were fitted using available experimental differential cross section data from the A2 Collaboration at MAMI (2017) and the CLAS Collaboration (2009). By employing this approach, we phenomenologically obtained effective couplings related to the partial decay widths and helicity amplitudes of nucleon resonances. These results provide insight into the properties of nucleon resonances involved in eta-prime meson photoproduction.
