论文标题
期待使用FASER测试Koto异常
Looking forward to test the KOTO anomaly with FASER
论文作者
论文摘要
在新的Faser实验的重要作用中，在LHC上寻找光线和长寿颗粒的搜索将在接下来的几年中加剧。在这项研究中，我们讨论了FASER如何独立探究与Kaon工厂新物理搜索相关的这种情况。我们强调了针对Koto实验中最近观察到的三个异常事件的拟议解释。 FASER的基线完全对应于避免带电kaons上Na62边界的异常的寿命解决方案。结果，该实验可以在操作的前几周开始限制相关模型。 In some cases, it can confirm a possible discovery with up to 10000 spectacular high-energy events in FASER during LHC Run 3. Further complementarities between FASER and kaon factories, which employ FASER capability to study di-photon signatures, are illustrated for the model with axion-like particles dominantly coupled to $SU(2)_W$ gauge bosons.
The search for light and long-lived particles at the LHC will be intensified in the upcoming years with a prominent role of the new FASER experiment. In this study, we discuss how FASER could independently probe such scenarios relevant for new physics searches at kaon factories. We put an emphasis on the proposed explanations for the recently observed three anomalous events in the KOTO experiment. The baseline of FASER precisely corresponds to the proposed lifetime solution to the anomaly that avoids the NA62 bounds on charged kaons. As a result, the experiment can start constraining relevant models within the first few weeks of its operation. In some cases, it can confirm a possible discovery with up to 10000 spectacular high-energy events in FASER during LHC Run 3. Further complementarities between FASER and kaon factories, which employ FASER capability to study di-photon signatures, are illustrated for the model with axion-like particles dominantly coupled to $SU(2)_W$ gauge bosons.
