arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.01629hep-ph
收藏

电子离子对撞机上半包容深度非弹性散射的固有不对称性

Intrinsic asymmetries in semi-inclusive deeply inelastic scattering at the Electron-Ion Collider

Weihua Yang, Xinghua Yang

摘要:

本文计算了中性流喷流产生的半包容深度非弹性散射过程。中性电流意味着相互作用可以由光子、$Z^0$ -玻色子及其干涉介导。假设初始电子被极化,然后被自旋为1/2的目标粒子散射。在考虑多重胶子散射的量子色动力学部分子模型中,采用共线展开形式,自动获得规范链,计算达到twist-3水平。在得到微分截面后,我们引入了内禀非对称性的定义。这个量揭示了夸克内禀横动量分布的不对称性。我们发现这些不对称性可以用横动量相关的部分子分布函数和电弱耦合来表示。因此,我们的计算为分析部分子分布函数和电弱耦合提供了一组新的量。这有助于同时理解深度非弹性散射过程中的强子弱相互作用和强相互作用。

英文摘要:

We calculate the neutral current jet production semi-inclusive deeply inelastic scattering process in this paper. Neutral current implies that interactions can be mediated by the photon, $Z^0$-boson and their interference. The initial electron is assumed to be polarized and then scattered off by a target particle with spin-1/2. Calculations are carried out up to twist-3 level in the quantum chromodynamics parton model by applying the collinear expansion formalism where multiple gluon scattering is taken into account and gauge links are obtained automatically. After obtaining the differential cross section, we introduce the definition of the intrinsic asymmetry. This quantity reveals the asymmetry in the distribution of the quark intrinsic transverse momentum. We find that these asymmetries can be expressed in terms of the transverse momentum dependent parton distribution functions and the electroweak couplings. As a result, our calculations provide a set of new quantities for analyzing the parton distribution functions and the electroweak couplings. It is helpful to understand the hadronic weak interactions and strong interactions in the deeply inelastic scattering process simultaneously.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑