AI 中文总结
本文分析氦-4靶上的深度虚康普顿散射，考虑前导扭及运动学扭度3、4效应，给出JLab相关截面的数值估计，并强调NLO贡献的重要性，最终获得核内夸克与胶子的首张断层图像。
AI 中文摘要
轻核上的相干硬排他反应提供了探索其夸克和胶子结构的途径，并为三维核断层成像提供了框架。我们分析了氦-4靶上的深度虚康普顿散射，包括前导扭贡献以及运动学扭度为3和4的效应。我们给出了与JLab实验相关的运动学区域中截面和不对称性的数值估计。我们强调了次领头阶（NLO）以及运动学扭度为3和4的贡献对于解释JLab运动学数据的重要性。我们得出了氦-4核中夸克和胶子的首个断层图像。
英文摘要
Coherent hard exclusive reactions on light nuclei offer access to their quark and gluon structure and provide a framework for three-dimensional nuclear tomography. We analyze deeply virtual Compton scattering on a helium-4 target, including leading-twist contributions as well as kinematical twist-3 and twist-4 effects. We present numerical estimates of cross sections and asymmetries for kinematic regimes relevant to JLab experiments. We emphasize the importance of next to leading order (NLO) and kinematical twist 3 and 4 contributions to interpret data in the JLab kinematics. We deduce a first tomographic image of quarks and gluons in the helium-4 nucleus.
CommentsContribution to: DIS2026
