Partonic structure of nucleons and nuclei (B01)

对广义部分子分布的研究可以给出核子内部结构的三维成像，因为广义部分子分布同时编码了核子形状因子和系统内部的部分子分布信息。在新的资助期，我们计划集中研究以引力形式因子(GFF)编码的强子内部的力学性质(压力和剪切力分布)。引力形式因子与非常广泛的一类物理问题有关，从广义相对论的基本问题到硬排他过程理论和奇异木炭物理学。尽管无法直接接触到具有引力的这些形状因子，但它们的第一次测量是根据硬QCD过程中的一个pls提出的理论进行的。

A study of the generalized parton distributions (GPDs) can give a 3-dimensional imaging of the nucleon internal structures, since the GPDs encode the information of the nucleon form factors as well as the parton distributions inside the system simultaneously. In the new funding period we plan to concentrate on the mechanical properties (pressure and shear forces distributions) inside hadrons encoded in the gravitational form factors (GFFs). The gravitational form factors are related to a very wide class of physics problems ranging from the fundamental questions of General Relativity to the theory of hard exclusive processes and physics of exotic charmonia. Although a direct access to these form factors with gravitational forces is out of reach, their first measurements, following the theory suggested by one of the PLs in hard QCD processes became available.