AI 中文总结
该研究利用TQ4Q2.0共线碎裂函数，结合NRQCD因子化与HF-NRevo方案，探究全重四夸克产生的碎裂动力学，重点关注轴矢量构型，为关联奇特强子谱与质子部分子结构提供不确定性框架。
AI 中文摘要
我们利用TQ4Q2.0共线碎裂函数（FF）组研究全重四夸克产生的碎裂动力学，涵盖标量（0⁺⁺）、轴矢量（1⁺⁻）和张量（2⁺⁺）构型。碎裂输入通过NRQCD因子化在完整相关部分子道集内确定，随后通过HF-NRevo方案跨越重味阈值演化。与碎裂标度变化相关的微扰不确定性，与编码在色复合长程矩阵元中的非微扰效应一并传播。研究重点为轴矢量 sector，其碎裂模式使其对LHC和FCC能量下的内禀粲夸克贡献特别敏感。因此，TQ4Q2.0提供了一个考虑不确定性的框架，用于在宽运动学范围内探索全重四夸克产生，并将奇特强子谱与质子的部分子结构关联起来。
英文摘要
We investigate the fragmentation dynamics underlying the production of fully heavy tetraquarks by means of the TQ4Q2.0 collinear FF set, covering scalar ($0^{++}$), axial-vector ($1^{+-}$), and tensor ($2^{++}$) configurations. The fragmentation inputs are determined within NRQCD factorization for the complete set of relevant partonic channels and are subsequently evolved across heavy-flavor thresholds through the HF-NRevo scheme. Perturbative uncertainties associated with fragmentation-scale variations are consistently propagated together with nonperturbative effects encoded in color-composite long-distance matrix elements. Attention is devoted to the axial-vector sector, whose fragmentation pattern makes it especially sensitive to intrinsic-charm contributions at LHC and FCC energies. TQ4Q2.0 therefore provides an uncertainty-aware framework for exploring fully heavy tetraquark production over a broad kinematic range and for connecting exotic-hadron spectroscopy with the partonic structure of the proton.
Comments7 pages, 1 figure. Proceedings of the 33rd International Workshop on Deep Inelastic Scattering and Related Subjects (DIS2026), 4-8 May 2026, Bologna, Italy
