Speaker
Bheemsehan Gurjar
(University of Science and Technology of China)
Description
The near-threshold photo- and electroproduction of heavy vector quarkonia off the proton offers a unique probe of its gluonic structure. In particular, the $J/\psi$ photoproduction cross section close to threshold is directly sensitive to the proton’s gluon gravitational form factors (GFFs). In this work, we employ the generalized parton distribution framework, combined with gluon GFFs computed in a light-front gluon-spectator model inspired by soft-wall AdS/QCD, to predict the differential and total cross sections for near-threshold $J/\psi$ and $\Upsilon$ photoproduction. I will present our results and compare them with measurements from the $J/\psi$-007 experiment and the GlueX Collaboration at Jefferson Lab.
Author
Bheemsehan Gurjar
(University of Science and Technology of China)
Co-authors
Ms
Amrita Sain
(Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou)
Chandan Mondal
(Institute of Modern Physics, Chinese Academy of Sciences)