The electromagnetic probe has proven to be a very efficient way to access the 3−dimensional structure of the nucleon, particularly thanks to the exclusive Compton processes. We explore the hard photoproduction of a large invariant mass diphoton in the kinematical regime where the diphoton is nearly forward and its invariant mass is the hard scale enabling to factorize the scattering amplitude in terms of generalized parton distributions. Our results include calculated unpolarized cross sections and the angular asymmetry, triggered by a linearly polarized photon beam.
Theoretical Physics Division seminar
Studies at low and intermediate redshift ranges show that the relation between the luminous structure and underlying dark matter distribution is not straightforward and depend on the various properties of galaxy population. Naturally one would like to extend these studies of the luminous-dark matter relations to the high redshift ranges (z>2) in order to improve our understanding of the evolution of the universe structure.