论文标题

Muon $(G-2)$及其在未来TERA- $ Z $和HIGGS工厂的ALP解释

The ALP explanation to muon $(g-2)$ and its test at future Tera-$Z$ and Higgs factories

论文作者

Liu, Jia, Ma, Xiaolin, Wang, Lian-Tao, Wang, Xiao-Ping

论文摘要

具有轴颗粒(ALP)的模型可以为MUON异常磁矩$(G-2)_ $与标准模型预测之间的实验测量之间的差异提供解释。这种解释依赖于ALP与MUON和光子的耦合。我们还将更通用的耦合到Electroweak仪表玻色子上,并将它们纳入到2循环阶的计算中。我们研究了现有的实验约束,发现它们不排除所考虑的ALP模型,这是对$(g-2)_μ$异常的可能解释。同时,我们发现未来的tera- $ z $和Higgs工厂(例如CEPC和FCC-EE)可以通过使用最终状态$(γγ)γ$,$(μ^+μ^ - )γ$和$(μ^+μ^+μ^+μ^ - )μ^+μ^ - $^ - $^ - $^ - $($^+μ^ - )γ$,$(γγ)γ$,$(γγ)γ$完全覆盖相关参数空间。

Models with an Axion Like Particle (ALP) can provide an explanation for the discrepancy between experimental measurement of the muon anomalous magnetic moment $(g-2)_μ$ and the Standard Model prediction. This explanation relies on the couplings of the ALP to the muon and the photon. We also include more general couplings to the electroweak gauge bosons and incorporate them in the calculations up to the 2-loop order. We investigate the existing experimental constraints and find that they do not rule out the ALP model under consideration as a possible explanation for the $(g-2)_μ$ anomaly. At the same time, we find the future Tera-$Z$ and Higgs factories, such as the CEPC and FCC-ee, can completely cover the relevant parameter space through searches with final states $(γγ) γ$, $(μ^+ μ^-) γ$ and $(μ^+ μ^-) μ^+ μ^-$.

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