论文标题
在$ e^+ e^ - $ colliders中，梁极化和系统不确定性的相互作用
Interplay of Beam Polarisation and Systematic Uncertainties in Electroweak Precision Measurements at Future $e^+ e^-$ Colliders
论文作者
论文摘要
未来的高能量$ \ textrm {e}^+\ textrm {e}^ - $ colliders将提供标准模型中一些最精确的测试。在电气上可观察到的统计不确定性和三量规耦合的统计不确定性将通过当前测量值来改善数量级。这为准确评估和最小化实验系统不确定性的影响提供了新的挑战。梁极化可能具有隔离和确定系统效应大小的独特潜力。到目前为止，研究主要集中于梁极化的统计改进。这项研究旨在首次评估其对系统不确定性的影响。精确可观测值的组合拟合，例如手性费米耦合和异常的三重量规耦合，以及实验系统的效应，对2-铁和4-屈服最终态的发电机级差分分布进行了实验性系统效应。对可用光束极化和亮度的不同配置进行了有或没有系统效应的测试，并将在详细的实验模拟中对费米和仪表玻色子耦合的现有投影进行讨论。
Future high-energy $\textrm{e}^+\textrm{e}^-$ colliders will provide some of the most precise tests of the Standard Model. Statistical uncertainties on electroweak precision observables and triple gauge couplings are expected to improve by orders of magnitude over current measurements. This provides a new challenge in accurately assessing and minimizing the impact of experimental systematic uncertainties. Beam polarization may hold a unique potential to isolate and determine the size of systematic effects. So far, studies have mainly focused on the statistical improvements from beam polarisation. This study aims to assess, for the first time, its impact on systematic uncertainties. A combined fit of precision observables, such as chiral fermion couplings and anomalous triple gauge couplings, together with experimental systematic effects is performed on generator-level differential distribution of 2-fermion and 4-fermion final-states. Different configurations of available beam polarisations and luminosities are tested with and without systematic effects, and will be discussed in the context of the existing projections on fermion and gauge boson couplings from detailed experimental simulations.
