Measurement of the Deeply Virtual Compton Scattering (DVCS) Cross Section Using a PbWO₄ Electromagnetic Calorimeter in Jefferson Lab's Experimental Hall C

Deeply Virtual Compton Scattering (DVCS) is the simplest probe of Generalized Parton Distributions (GPDs). These provide information on the longitudinal momentum distributions and spatial distributions of particles within the nucleon, and thus assist in developing a comprehensive and multidimensional understanding of internal nucleon structure. Data collected in Experimental Hall C at Jefferson Lab from the Fall of 2023 through the Spring of 2024 utilized a PbWO₄ electromagnetic calorimeter shielded by a magnet in order to measure the DVCS cross section. This experimental setup allows for improved energy reconstruction and resolution of the photons produced in DVCS reactions, leading to high-precision measurements of the DVCS cross section and GPDs. These improvements can therefore offer deeper insight to the internal structure of the proton and the neutron.