Authors
Mamo, Kiminad; Zahed, Ismail
Abstract
The diffractive photoproduction of J/ on a nucleon, is mostly due to gluonic exchanges at alls. In holographic QCD (large number of colors and strong t Hooft coupling), these exchangesare captured by gravitons near threshold, and their Reggeized Pomeron form asymptotically. Werevisit our holographic analysis of the A and D gravitational form factors in light of the new latticedata, and use them to refine our predictions for the photoproduction of J/ near threshold, andthe comparison to the GlueX data. We use these results to estimate the scalar and mass radii ofthe nucleon, and describe the gravitational pressure and shear across a nucleon.