标题： 当不变截面变化时：电子-离子对撞机的情况 显示英文标题

标题： When invariable cross-sections change: the Electron-Ion Collider case

摘要： 在日常研究中，通常默认散射截面对于给定的粒子种类、质心系能量和粒子极化具有固定值。 然而，在观察到高能轫致辐射抑制现象后，这一假设受到了质疑。 这一过程将在未来电子-离子对撞机的实验中发挥重要作用，我们在这里展示了如何通过横向束流位移在该装置中深入研究轫致辐射截面的变化。 特别是，我们预测在大束流分离情况下观测到的截面会有显著增加。 我们还讨论了这些难以捉摸的现象与其他宏观距离上发生的量子现象之间的关系。 在此背景下，也评估了EIC上相干轫致辐射的显著且可能有用的特性。 显示英文摘要

摘要： In everyday research, it is tacitly assumed that the scattering cross-sections have fixed values for the given particle species, centre-of-mass energy, and particle polarizations. However, this assumption has been called into question after several observations of suppression of high-energy bremsstrahlung. This process will play a major role in experiments at the future Electron-Ion Collider, and we show here how variations of the bremsstrahlung cross-section can be profoundly studied there using the lateral beam displacements. In particular, we predict very strong increase of the observed cross-sections for large beam separations. We also discuss the relation of these elusive effects to other quantum phenomena occurring over macroscopic distances. In this context, spectacular and possibly useful properties of the coherent bremsstrahlung at the EIC are also evaluated.