$P$-波夸克偶素的光锥分布

中文摘要 AI 辅助

受$P$-波夸克偶素光锥分布研究兴趣重燃的推动，我们在基矢光前量子化（BLFQ）框架内研究了这些态的领先扭度分布振幅。虽然我们提取的分布呈现出与非相对论极限预期一致的宏观形状，但我们发现相对论效应引入了关键的结构特征。最值得注意的是，我们在轴矢量介子的分布振幅中观察到新颖的“W”形结构，这些结构源于相对论诱导的$S/D$分波，无法用非相对论动力学解释。这些发现为分析硬排他过程提供了必要的非微扰输入，并强调了相对论框架对于在现代高能对撞机上理解重夸克偶素产生及其结构的重要性。

英文摘要

Motivated by renewed interest in the light-cone distributions of $P$-wave quarkonia, we investigate the leading-twist distribution amplitudes of these states within the basis light-front quantization (BLFQ) formalism. While our extracted distributions exhibit macroscopic shapes consistent with expectations from the non-relativistic limit, we find that relativistic effects introduce critical structural features. Most notably, we observe novel ``W"-shaped structures in the distribution amplitudes of the axial vector mesons, which arise from relativistically induced $S/D$ partial waves and cannot be explained by non-relativistic dynamics. These findings provide essential non-perturbative inputs for analyzing hard exclusive processes and highlight the importance of relativistic frameworks for understanding heavy quarkonium production and structure at modern high-energy colliders.

发表机构

• University of Science and Technology of China（中国科学技术大学）
• Anhui Center for Fundamental Sciences in Theoretical Physics, University of Science and Technology of China（中国科学技术大学理论物理基础科学中心）
• State Key Laboratory of Heavy Ion Science and Technology, Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所重离子科学和技术国家重点实验室）
• School of Nuclear Science and Technology, University of Chinese Academy of Sciences（中国科学院大学核科学与技术学院）
• Huazhong University of Science and Technology（华中科技大学）

机构由 AI 辅助整理，请以论文原文为准。