Speaker
Description
The Compton scattering process in different kinematical regimes provides a variety of information on the proton structure. In the near threshold regime, real and virtual Compton scattering give access, respectively, to the static polarizabilities and the generalized polarizabilities of the proton. In recent years, a series of new measurements provided new extractions of the polarizabilities. The analysis of the experimental data has been performed using different theoretical frameworks. We will focus on the use of dispersion relation techniques, summarising the latest advances and applications. In the deep inelastic region, the virtual Compton scattering gives access to generalized parton distributions (GPDs). GPDs encode new key information on the partonic structure of the nucleon, among which the form factors of the energy momentum tensors. We will discuss in particular the so-called D form factor and present its dispersive representation in comparison with available model predictions and phenomenological extractions.
