AI 中文总结
本文回顾了通过Drell-Yan过程测量得到的横向动量依赖分布的最新结果，并探讨了利用J-PARC的独占π介子诱导Drell-Yan过程获取核子广义部分子分布的未来前景。
AI 中文摘要
部分子轨道运动对核子自旋的贡献编码在横向动量依赖分布（TMDs）和广义部分子分布（GPDs）中。目前，这些分布通过轻子诱导过程获取，如半包容深度非弹性散射（SIDIS）和深度虚康普顿散射（DVCS）。（非）极化的强子束Drell-Yan过程提供了一种独特且互补的探针，能够在类空和类时方法中对TMDs和GPDs的普适性性质进行关键测试。本报告回顾了从Drell-Yan测量中获得的TMDs最新结果，并讨论了通过J-PARC的独占π介子诱导Drell-Yan过程测量来获取核子GPDs的未来前景。
英文摘要
Contributions of parton's orbital motion to the nucleon spin are encoded in the transverse-momentum dependent distributions (TMDs) and generalized parton distributions (GPDs). Currently these distributions are accessed through the lepton-induced processes such as semi-inclusive deep-inelastic scattering (SIDIS) and deeply virtual Compton Scattering (DVCS). The (un)polarized Drell-Yan process with hadron beams provides a unique and complementary probe, enabling critical tests of the universality properties of TMDs and GPDs in the space-like and time-like approaches. This talk reviews recent results of TMDs obtained from the Drell-Yan measurements and discusses future prospects for accessing nucleon GPDs through measurements of the exclusive pion-induced Drell-Yan process at J-PARC.
Comments10 pages, 3 figures, proceedings of plenary talk in 26th International Symposium on Spin Physics (SPIN2025)
Journal refPoS SPIN2025 (2026) 025
