发表机构
Università degli Studi di Perugia; INFN Sezione di Perugia; Institute of Modern Physics, Chinese Academy of Sciences; Université de Liège; Università di Roma Tor Vergata; INFN Sezione di Roma Tor Vergata; Istituto Nazionale di Fisica Nucleare Sezione di Perugia（佩鲁贾大学; 意大利国家核物理研究所佩鲁贾分部; 中国科学院近代物理研究所; 列日大学; 罗马第二大学; 意大利国家核物理研究所罗马第二大学分部; 意大利国家核物理研究所佩鲁贾分部）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
提出利用轻核和重核上的双部分子散射精确研究核束缚对核子内部结构的影响，通过计算核双部分子分布引入双EMC比，该量对核子部分子结构和核束缚更敏感，有助于解决核内核子变化问题。
AI 中文摘要
在轻核和重核上的双部分子散射过程被提出作为一种有效工具，以开辟一个新的窗口，用于精确研究核束缚对核子内部结构的影响，这一思路秉承了欧洲缪子合作组（EMC）效应的精神。关键要素在于对核双部分子分布的实际计算，该分布包含核子的双部分子分布和广义部分子分布的信息，并与核光锥分布进行卷积。这使我们能够引入一个新的量，我们称之为双EMC比，它似乎比标准EMC效应对核子部分子结构和核束缚都更为敏感。因此，它可能有助于解决长期存在的问题，即核子在原子核中被束缚时如何发生变化。
英文摘要
The double-parton scattering process off light and heavy nuclei is proposed as an effective tool to open a novel window for accurately studying the effects of nuclear binding on the internal structure of the nucleon, in the spirit of the European Muon Collaboration (EMC) effect. The key ingredient is the actual calculation of nuclear double-parton distributions that contain information about double-parton distributions and generalized-parton distributions of the nucleon, folded with nuclear light-front distributions. It allows to introduce a new quantity, which we call double-EMC ratio that appears to be much more sensitive than the standard EMC effect to both the nucleon partonic structure and to the nuclear binding. Hence, it could help solving long-standing questions about how nucleons change when they are bound in atomic nuclei.
