Probing Small-x Nuclear Gluonic Structure Via Vector Meson Photoproduction
ultra-peripheral collisions (UPCs) of relativistic heavy ions, quasi-real photons emitted by one nucleus can interact with the other nucleus via coherent or incoherent photonuclear processes, leading to the photoproduction of vector mesons (VMs), such as \rho, \phi, and J/\psi. Coherent photoproduction provides direct sensitivity to the average nuclear gluon distribution, while incoherent production probes event-by-event fluctuations of the gluon density at nucleonic and subnucleonic scales.
叶早晨 教授(华南师范大学)
凌云楼1201