标题： 二介子方位不对称性和轻夸克偶极矩在电子-离子对撞机上的研究 显示英文标题

标题： Dihadron azimuthal asymmetry and light-quark dipole moments at the Electron-Ion Collider

摘要： 我们提出了一种新颖的方法，通过检查电子-离子对撞机上无极化质子靶上的半包容深击inelastic（DIS）中弹性对撞中一对平行强子之间的方位不对称性，来探测轻夸克偶极矩。这些不对称性提供了一种观察横向极化夸克的手段，这些夸克仅来源于偶极子和标准模型相互作用之间的干涉，因此线性依赖于偶极子耦合。我们证明了这种方法可以将当前对轻夸克偶极算符的约束提高一个数量级，并且不受其他新物理效应污染的影响。此外，它允许同时确定偶极子耦合的实部和虚部，为在高能下研究潜在的$CP$-破坏效应提供了新的途径。 显示英文摘要

摘要： We propose a novel method to probe light-quark dipole moments by examining the azimuthal asymmetries between a collinear pair of hadrons in semi-inclusive deep inelastic lepton scattering off an unpolarized proton target at the Electron-Ion Collider. These asymmetries provide a means to observe transversely polarized quarks, which arise exclusively from the interference between the dipole and the Standard Model interactions, thereby depending linearly on the dipole couplings. We demonstrate that this novel approach can enhance current constraints on light-quark dipole operators by an order of magnitude, free from contamination of other new physics effects. Furthermore, it allows for a simultaneous determination of both the real and imaginary parts of the dipole couplings, offering a new avenue for investigating potential $CP$-violating effects at high energies.