I give an overview of (mostly my own) work on aspects of QCD dynamics in hadronic form factors at large momentum transfer.
The topics include a discussion of basics of soft and hard mechanisms, QCD sum rule applications, calculation of meson form factors in holographic QCD, and connection of form factors to generalized parton distributions.
The recent measurements of exclusive backward-angle meson electroproduction
from Jefferson Lab hint at a new domain of applicability of the QCD collinear
factorization framework in the special u-channel kinematics regime. As a
signature of QCD degrees of freedom in nuclei, and as a co-requisite of
reaching the factorization regime, Color Transparency is expected to manifest
itself as an...
We present the results of two experimental programs at the Alternating Gradient Synchrotron of Brookhaven National Lab, to measure the nuclear transparency of nuclei via the quasi-elastic A(p,2p) scattering process near 90° in the pp center of mass. Data was taken at effective incident momenta ranging from 5.0 to 15.8 GeV/c (taking into account the Fermi motion of the target proton in the...
By design, the (e,e’p) color transparency experiments have been done in relatively clean kinematics (parallel) where FSI effects are minimal. Also, the dominator of the transparency is a naïve function such that and one would not expect the ratio to go to unity even if there was color transparency due to initial-state effects, such as short-range correlations, which are neglected. We look...
