AI 中文总结
本文利用SCET_G理论统一描述冷核物质中的纵向动量演化与横向展宽，结合RG与BFKL演化，解释了DIS和Drell-Yan的核修正，并预测EIC的TMD多重性。
AI 中文摘要
我们利用包含Glauber胶子相互作用的软共线有效理论（SCET$_G$），提出了冷核物质中纵向动量演化和横向动量展宽的统一描述。在有限核中，Landau-Pomeranchuk-Migdal干涉将介质诱导的能量损失与可观测量所分辨的横向尺度耦合起来。我们的框架将依赖于碰撞参数的能耗RG演化与碰撞核的BFKL型快度演化相结合，并通过运动学约束和跑动耦合加以改进。利用一组共同的冷核物质参数，该框架解释了半包容DIS和Drell-Yan产生过程中的主要核修正模式，并为EIC上的TMD强子多重性提供了预测。我们还讨论了DIS中的单点能量关联子，其能量加权抑制了主要的末态能量损失贡献。在所研究的EIC运动学中，残余动力学修正很小，使得核修正主要由初态核部分子分布主导。
英文摘要
We present a unified description of longitudinal momentum evolution and transverse-momentum broadening in cold nuclear matter using soft collinear effective theory with Glauber gluon interactions (SCET$_{\rm G}$). In a finite nucleus, Landau--Pomeranchuk--Migdal interference couples medium-induced energy loss to the transverse scale resolved by the observable. Our framework combines RG evolution of impact-parameter-dependent energy loss with BFKL-type rapidity evolution of the collision kernel, improved by kinematical constraints and running coupling. With a common set of cold-nuclear-matter parameters, it accounts for the main nuclear modification patterns in semi-inclusive DIS and Drell--Yan production and provides predictions for TMD hadron multiplicities at the EIC. We also discuss the one-point energy correlator in DIS, whose energy weighting suppresses the leading final-state energy-loss contribution. In the EIC kinematics studied, the residual dynamical corrections are small, leaving the nuclear modification dominated by the initial-state nuclear parton distributions.
Comments6 pages, 3 figures, proceeding for Hard Probes 2026
