半秘密相互作用ALP对费米实验室μ子$g-2$测量的解释
Semi-secretly interacting ALP as an explanation of Fermilab muon $g-2$ measurement
摘要：
十多年来，μ子反常磁矩测量一直是一个暗示物理学超越标准模型（BSM）的长期反常现象。最近宣布的结果从μ子$g-2$合作，对应于3.3 $σ$偏离标准模型值（4.2 $σ$与以前的测量相结合）正在加强需要新的物理耦合到μ子。在这封信中，我们提出了一个新的方案，其中标准模型（SM）是由类轴子粒子（ALP）和矢量类费米子增强。我们发现，这样的模型承认一个很好的解释最近μ子$g-2$测量通过量子过程具有ALP与μ子和新引入的费米子相互作用。以前提出的解释与ALP利用光子和/或SM费米子的相互作用。因此，在这封信中，我们补充和扩展了这种情况。我们还讨论了对撞机的前景模型，以及ALP是长寿或稳定的暗物质（DM）的候选人的可能性。
英文摘要：
The muon anomalous magnetic moment measurement has, for more than a decade, been a long-standing anomaly hinting the physics beyond the Standard Model (BSM). The recently announced results from muon $g-2$ collaboration, corresponding to 3.3$σ$ deviation from Standard Model value (4.2$σ$ in combination with previous measurement) are strengthening the need for new physics coupled to muons. In this letter, we propose a novel scenario in which Standard Model (SM) is augmented by an axion-like particle (ALP) and vector-like fermions. We find that such a model admits an excellent interpretation of recent muon $g-2$ measurement through quantum process featuring ALP interacting with muons and newly introduced fermions. Previously proposed explanations with ALPs utilize interactions with photons and/or SM fermions. Therefore, in this letter we complement and extend such scenarios. We also discuss collider prospects for the model as well as the possibility that ALP is long lived or stable dark matter (DM) candidate.
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