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arXiv 2109.09345hep-phhep-ex
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分解包含费米子和规范玻色子的一对粒子的自旋关联的整个光谱

Breaking down the entire spectrum of spin correlations of a pair of particles involving fermions and gauge bosons

Rafiqul Rahaman, Ritesh K. Singh

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32 pages, 5 figures, and 3 tables
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摘要：

我们讨论的形式主义的自旋相关性和极化的两个粒子系统的自旋半半，半1和1 - 1，并提供与联合角分布的衰变产物识别它们的不对称性的极化和相关性之间的连接。作为例子，我们展示了过程$e^-e^+\to t\bar{t}$，$gb \to tW^-$和$e^-e^+\to ZZ$在标准模型中的形式主义。在部分子水平上研究了反常耦合对过程$e^-e^+\to t\bar{t}$、$gb \to tW^-$和$u\bar{d}\to ZW^+$中极化和自旋关联的影响，并比较了它们的强度.自旋相关有可能提供一个显着的改善极化在探测异常耦合。

英文摘要：

We discuss a formalism for the spin correlations and polarizations in two-particle systems with spins half-half, half-one and one-one, and provide the connections between the polarizations and correlations with the joint angular distributions of decay products identifying the asymmetries for them. We demonstrate the formalism in the processes $e^-e^+\to t\bar{t}$, $gb \to tW^-$ and $e^-e^+\to ZZ$ in the standard model as examples. We investigate the effect of some anomalous couplings on the polarizations and spin correlations in the processes $e^-e^+\to t\bar{t}$, $gb \to tW^-$ and $u\bar{d}\to ZW^+$ at parton level and compare their strengths. The spin correlations have the potential to provide a significant improvement over the polarizations in probing the anomalous couplings.

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。

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