Speaker
Kirill Semenov-Tyan-Shanskiy
(Kyungpook National University)
Description
We revisit the application of the Froissart-Gribov projections in the analysis of amplitudes for deeply virtual Compton scattering, providing essential information on generalized parton distributions (GPDs).
The pivotal role of these projections in a systematic description of a hadron's response to string-like QCD probes characterised by different values of angular momentum, $J$, is emphasised.
We discuss a relationship between the projections and GPDs for spin-1/2 targets, and we investigate the possible impact for phenomenological GPD models. Finally, we provide the first numerical estimates for Froissart-Gribov projections based on DVCS amplitudes directly extracted from experimental data.
