The measurement of nuclear generalized parton distributions (GPDs) in hard exclusive processes, such as deeply virtual Compton Scattering (DVCS), will be one of the main achievements of a new generation of experiments at high luminosity. Let us mention those under way at the Jefferson Laboratory (JLab) with the 12 GeV electron beam and, above all, those planned at the future Electron Ion Collider. The CLAS collaboration at JLab has recently demonstrated the possibility to disentangle the the coherent and incoherent channels of nuclear DVCS, a first step towards the measurement of GPDs of nuclei and of bound nucleons, respectively, opening new exciting perspectives in the field. In this scenario, accurate calculations, ultimately realistic, become mandatory. Light nuclei, for which realistic studies are affordable and conventional nuclear effects can be safely estimated, so that possible exotic effects can be exposed, play an important role. The status of the calculation of GPDs for light nuclei will be summarized, in particular for $$^3$$ 3 He and $$^4$$ 4 He, and some updates will be presented. The prospects for the next years, related to the new series of measurements at future facilities, will be addressed.

中文翻译：

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轻核的广义部分分布

在诸如深度虚拟康普顿散射 (DVCS) 等硬排他过程中测量核广义部分子分布 (GPD) 将是新一代高光度实验的主要成果之一。让我们提一下在杰斐逊实验室 (JLab) 正在进行的那些使用 12 GeV 电子束的工作，最重要的是，那些计划在未来的电子离子对撞机上进行的工作。JLab 的 CLAS 合作最近证明了解开核 DVCS 的相干和非相干通道的可能性，这是分别测量核和结合核子的 GPD 的第一步，在该领域开辟了新的令人兴奋的前景。在这种情况下，准确的计算，最终是现实的，成为强制性的。轻核，对于可以负担得起的现实研究和可以安全地估计常规核效应，从而可以暴露可能的外来效应，发挥重要作用。将总结轻原子核 GPD 的计算状态，特别是 $$^3$$ 3 He 和 $$^4$$ 4 He，并将提供一些更新。将讨论与未来设施的新系列测量相关的未来几年的前景。