论文标题
通过$ j/ψ$ decay探索Muon $ G-2 $的新物理场景
Probing new physics scenarios of muon $g-2$ via $J/ψ$ decay at BESIII
论文作者
论文摘要
可以通过调用一个额外的粒子（$ x_1 $）或标量（$ x_0 $）来缓解标准模型预测与哑光异常磁矩的实验测量之间的分歧。可以在衰减$ j/ψ\ toμ^ - μ^+ x $中搜索这个新粒子，带有质量$ m_x \ lyssim 2m_μ$，其中缺少$ x $。我们的数值研究表明，在muon $ g-2 $测量允许的参数空间中，在BESIII实验中搜索是非常可行的。
The disagreement between the standard model prediction and the experimental measurement of muon anomalous magnetic moment can be alleviated by invoking an additional particle which is either a vector boson ($X_1$) or a scalar ($X_0$). This new particle, with the mass $m_X \lesssim 2 m_μ$, can be searched for in the decay $J/ψ\to μ^- μ^+ X$, where $X$ is missing. Our numerical study shows that the search is quite feasible at the BESIII experiment in the parameter space allowed by muon $g-2$ measurements.
