发表机构
Center for Nuclear Study (CNS), University of Tokyo; Advanced Science Research Center, Japan Atomic Energy Agency (JAEA); Research Center for Nuclear Physics (RCNP), Osaka University; Center for Fundamental Physics, School of Mechanics and Physics, Anhui University of Science and Technology（东京大学核研究中心; 日本原子能机构先进科学研究; 大阪大学核物理研究中心; 安徽理工大学力学与物理学院基础物理中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究粲夸克偶素-核子相互作用，利用基于QCD多极展开的有效势关联核子引力形状因子，通过J/ψ-N和ψ(2S)-N关联函数探测核子D-形状因子。
AI 中文摘要
我们研究了粲夸克偶素-核子相互作用，重点关注其与核子内部结构（编码在引力形状因子中）的联系。为了描述这种相互作用，我们采用了一个基于QCD多极展开的有效势，在领先的色电偶极近似下。在这个框架中，势能用核子内部的能量和压力分布表示。我们首先从拟合到格点QCD数据的引力形状因子构建这些分布。然后通过要求得到的$J/\psi$-$N$势能在短距离区域外再现HAL QCD势能，以及从HAL QCD数据估计的散射相移，来固定剩余的模型参数。基于这个势能，我们评估了$J/\psi$-$N$关联函数，并进一步研究了$\psi(2S)$-$N$系统。然后我们检查了这些关联函数对核子$D$-形状因子的敏感性。
英文摘要
We investigate the charmonium-nucleon interaction, focusing on its connection with the internal structure of the nucleon encoded in the gravitational form factors. To describe this interaction, we employ an effective potential based on the QCD multipole expansion within the leading chromoelectric dipole approximation. In this framework, the potential is expressed in terms of the energy and pressure distributions inside the nucleon. We first construct these distributions from the gravitational form factors fitted to lattice-QCD data. The remaining model parameters are then fixed by requiring that the resulting $J/ψ$-$N$ potential reproduce the HAL QCD potential outside the short-distance region, as well as the scattering phase shift estimated from the HAL QCD data. Based on this potential, we evaluate the $J/ψ$-$N$ correlation function and further investigate the $ψ(2S)$-$N$ system. We then examine the sensitivity of these correlation functions to the nucleon $D$-form factor.
Comments9 pages, 8 figures
Journal refPhys. Rev. D 114, 054059 (2026)
