Speaker
Description
In this talk, we will discuss future experiments we are developing for measuring Timelike Compton Scattering (TCS) at JLab Hall C. The first experiment will measure transversely polarized target spin asymmetries off a NH$_{3}$ target. The second one is using an unpolarized hydrogen target and a circularly polarized photon beam, aiming at a high statistics measurement of TCS unpolarized and beam polarized cross sections. Our goal is to access the Generalized Parton Distributions (GPDs) H, H̃ and E. GPD E, poorly constrained, contains information about the orbital momentum of the quarks, and can be constrained with the first experiment. The main goal of the second experiment is to compare GPDs extracted from TCS (timelike process) to GPDs extracted from DVCS (Deeply Virtual Compton Scattering, spacelike process), to test GPDs universality. We will present these experiments, our goals, and projected results.
