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Double DVCS as a window to the complete mapping of GPDs
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abstract
Double deeply virtual Compton scattering (DDVCS) is the process where an electron scatters off a nucleon and produces a lepton pair. The main advantage of this process in contrast with deeply virtual and timelike Compton scatterings (DVCS and TCS) is the possibility of directly measuring GPDs for $x\neq\pm\xi$ at leading order in $\alpha_s$ (LO). We present a new calculation of the DDVCS amplitude based on spinor techniques which produce expressions for amplitudes that are perfectly suited for their implementation in numerical simulations. Elements of impact studies, including predictions for experiments at JLab12, JLab20+ and the Electron-Ion Collider (EIC), are studied by means of the PARTONS software and the EpIC Monte Carlo event generator.
Forward citations
Cited by 1 Pith paper
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New analysis for Nucleon Form Factors from GPDs
A new ansatz AMA25 for GPDs achieves lower reduced chi-squared fits to nucleon form factor data and better satisfies theoretical constraints than the prior GSAMA24 model.
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