中国电子离子对撞机（EicC）上的量子电动力学（QED）核介质效应
QED nuclear medium effects at EicC
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中文总结 AI 辅助
本研究针对EicC实验条件计算QED核介质效应，完成带电流深度非弹性散射等首项计算，发现该效应对提取核子与核的非微扰结构不可忽略。
中文摘要 AI 辅助
我们评估了未来中国电子离子对撞机（EicC）实验条件下的量子电动力学（QED）核介质效应，涵盖中性流与带电流弹性散射，以及中性流与带电流深度非弹性散射。我们在opacity展开的一阶下计算了截面修正，估计了核内多次散射导致的运动学修正；首次完成带电流深度非弹性散射与极化散射的计算，给出了预期的金-197（¹⁹⁷₇₉Au）、铅-208（²⁰⁸₈₂Pb）、铀-238（²³⁸₉₂U）核的结果，并将这些计算外推至较轻的钙-40（⁴⁰₂₀Ca）同位素。研究发现，在EicC上提取核子与核的过程无关的非微扰结构时，QED核介质效应不可忽略。
英文摘要
We evaluate quantum electrodynamics (QED) nuclear medium effects under experimental conditions at the future Electron-ion collider in China (EicC). We consider neutral-current and charged-current elastic scattering, as well as neutral-current and charged-current deep inelastic scattering. We compute cross-section corrections at first order in the opacity expansion and estimate kinematic modifications due to multiple rescattering within the nucleus. We perform the first calculations of charged-current deep inelastic scattering and polarized scattering. We present results for the anticipated $^{197}_{79}\mathrm{Au},~^{208}_{82}\mathrm{Pb},$ and $^{238}_{92}\mathrm{U}$ nuclei and extrapolate these calculations to the lighter $^{40}_{20}\mathrm{Ca}$ isotope. We find that QED nuclear medium effects are non-negligible when extracting the process-independent non-perturbative structure of nucleons and nuclei at the EicC.
发表机构
- Institute of Theoretical Physics, Chinese Academy of Sciences（中国科学院理论物理研究所）
- University of Chinese Academy of Sciences, School of Physical Sciences（中国科学院大学物理科学学院）
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