Speaker
Description
The gravitational form factors (GFFs) describe the fundamental structure of nucleons and nuclei through the matrix element of the energy-momentum tensor. Their Fourier transform allows a description of the spatial distribution of mass, angular momentum, pressure, and shear force densities for both quarks and gluons in the nucleon. In this presentation, I will focus on the recent results of the $J/\psi$ photoproduction near-threshold on the proton at Jefferson Lab to determine the elusive ${\it gluonic}$ gravitational form factors (gGFFs) using data from both $J/\psi$ decay channels, electronic and muonic. We'll discuss the caveats of the extraction of these gluonic GFFs in the threshold region and how to validate this extraction with the future SoLID $J/\psi$ and the EIC \Upsilon$ measurements. Both would enable future measurements critical to access the trace anomaly and gain insight into the origin of the nucleon mass
