Speaker
Description
We present a systematic study of nuclear-enhanced power corrections in deeply virtual Compton scattering (DVCS) on nuclear targets, extending techniques developed for inclusive deep inelastic scattering to exclusive processes. Using a light-cone operator product expansion and the method of regions, we identify coherent final-state interactions of the struck quark as the dominant source of higher-twist nuclear modifications. These contributions can be resummed to all orders, leading to compact expressions for the DVCS amplitude characterized by a single nonperturbative scale and enhanced by nuclear size effects. Our formalism provides a controlled framework for quantifying nuclear modifications to generalized parton distributions at small momentum transfer and moderate photon virtuality. The results establish a direct theoretical connection between inclusive DIS dynamics and exclusive nuclear observables, with important implications for three-dimensional imaging of nuclei at future facilities such as the Electron–Ion Collider.
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