Speaker
Description
Photoproduction is the interaction with two nuclei collisions, a linearly polarized quasi-real photon from one nucleus can interact with the other nucleus to produce a vector meson, such as $\rho^{0}$. Recently, some measurements by various experiments in ultra-peripheral collisions have observed spin-interference in $\rho^{0}$ photoproduction from STAR, marking a breakthrough in Fermi-scale quantum interference experiments. Based on it, STAR extended the measurement to hadronic heavy-ion collisions, where significant rescattering effects on $\rho$ mesons are expected.
In this report, we will discuss how these rescattering effects influence the measurement of spin-interference. By embedding $\rho^{0}$ mesons produced via photoproduction, modeled using the Vector Meson Dominance (VMD) model, into the Ultra-Relativistic Quantum Molecular Dynamics (UrQMD) framework, we estimate the effect on the $\cos2\phi$ and $\cos4\phi$ modulations, and account for rescattering effects when comparing theoretical predictions with experimental results in hadronic heavy-ion collisions.
