Speaker
Description
There is a wealth of information encoded in Generalized Parton Distributions (GPDs) to describe the three-dimensional structure of the nucleon. Deeply Virtual Compton Scattering (DVCS) experiments play a crucial role in accessing these distributions, providing a direct link to the spatial and momentum structure of partons inside the nucleon. The DVCS cross-section is commonly expressed either in terms of Compton Form Factors (CFFs) or helicity amplitudes, with the latter offering a more explicit representation of the helicity structure of the scattering process. In this presentation, I will discuss the formalism of photon electroproduction in terms of helicity amplitudes and the extraction of these amplitudes from DVCS experiments using likelihood analysis. This approach enables a statistically robust determination of helicity configurations by incorporating experimental uncertainties and correlations.
