Nuclear effects on generalized parton distributions of 3He
Sergio Scopetta
Abstract
The relevance of measuring Generalized Parton Distributions (GPDs) of nuclei is stressed and the unique possibilities offered by nuclear few body systems is emphasized. A realistic microscopic calculation of the unpolarized quark GPD Hq3 of the 3He nucleus is reviewed. Nuclear effects are found to be larger than in inclusive deep inelastic scattering, flavor dependent, increasing with the momentum transfer and the asymmetry of the process. They also depend on the choice of the realistic potential. Besides, it is found that nuclear GPDs cannot be factorized into a Delta2-dependent and a Delta2-independent term, as suggested in prescription proposed for finite nuclei.
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