论文标题
三型领域对MUON $ G-2 $的贡献
Contributions to the Muon $g-2$ from a Three-Form Field
论文作者
论文摘要
我们研究了3型场$ω$对MUON偶极矩$ G-2 $的贡献，这自然源自许多基本理论，例如字符串理论和超固定场理论。特别是，通过计算单循环Feynman图，我们获得了对Muon $ G-2 $的前阶$ω$诱导的贡献，该$ G-2 $被认为是有限的。然后，我们研究了扰动性和单位性的理论约束。特别是，通过计算各种初始和最终螺旋构型的树级$μ^+μ^ - $散射幅度来产生单位性边界。结果，尽管该$ω$的模型施加了强大的单位性界限，但我们仍然找到了一个可容纳MUON $ G-2 $数据的实质参数空间。
We examine contributions to the muon dipole moment $g-2$ from a 3-form field $Ω$, which naturally arises from many fundamental theories, such as the string theory and the hyperunified field theory. In particular, by calculating the one-loop Feynman diagram, we have obtained the leading-order $Ω$-induced contribution to the muon $g-2$, which is found to be finite. Then we investigate the theoretical constraints from perturbativity and unitarity. Especially, the unitarity bounds are yielded by computing the tree-level $μ^+μ^-$ scattering amplitudes of various initial and final helicity configurations. As a result, despite the strong unitarity bounds imposed on this model of $Ω$, we have still found a substantial parameter space which can accommodates the muon $g-2$ data.
