Chen-Tao Tan

Gluon gravitational form factors of the proton from near-threshold charmonium photoproduction

Motivated by near-threshold $J/\psi$ photoproduction measurements, we investigate the gluon contributions to the gravitational form factors (GFFs) of the proton associated with the energy-momentum tensor in quantum chromodynamics. We calculate the gluon GFFs and the corresponding mechanical properties of the proton wit...