论文标题
在Belle II探测Muon $ g-2 $异常的$μτ$风味侵略解决方案
Probing $μτ$ flavor-violating solutions for the muon $g-2$ anomaly at Belle II
论文作者
论文摘要
测量值与哑光异常磁矩的标准模型预测之间的差异是粒子物理学中最重要的问题之一。众所周知，由于单层校正中的$τ$质量增强，引入违反$μτ$ Lepton风味（LFV）耦合的介体玻色子X是解释差异的一种很好的解决方案。在本文中，我们研究了该模型的信号，即在Belle II实验中，假设抑制了Belle II实验中的同一符号瘦素。 We show that the Belle II experiment is highly sensitive to the scenario in the mediator mass range of ${\cal O}(1-10)$~GeV, using the $e^+e^- \to μ^\pmτ^\mp X \toμ^\pm μ^\pm τ^\mp τ^\mp$ process induced by the $X$.
The discrepancy between the measured value and the Standard Model prediction of the muon anomalous magnetic moment is one of the most important issues in the particle physics. It is known that introducing a mediator boson X with the $μτ$ lepton flavor violating (LFV) couplings is one good solution to explain the discrepancy, due to the $τ$ mass enhancement in the one-loop correction. In this paper, we study the signal of this model, i.e. the same-sign leptons, in the Belle II experiment, assuming the flavor-diagonal couplings are suppressed. We show that the Belle II experiment is highly sensitive to the scenario in the mediator mass range of ${\cal O}(1-10)$~GeV, using the $e^+e^- \to μ^\pmτ^\mp X \toμ^\pm μ^\pm τ^\mp τ^\mp$ process induced by the $X$.
