Tale of two anomalies
Tale of two anomalies
复制标题
DOI：
10.1103/physrevd.98.075011
复制
发表时间：
2018-06
影响因子：
5
通讯作者：
H. Davoudiasl;W. Marciano
中科院分区：
文献类型：
--
作者：
H. Davoudiasl;W. Marciano
A recent improved determination of the fine structure constant, α=1/137.035999046(27), leads to a ∼2.4σ negative discrepancy between the measured electron anomalous magnetic moment and the standard model prediction. That situation is to be compared with the muon anomalous magnetic moment where a positive ∼3.7σ discrepancy has existed for some time. A single scalar solution to both anomalies is shown to be possible if the two-loop electron Barr-Zee diagrams dominate the scalar one-loop electron anomaly effect and the scalar couplings to the electron and two photons are relatively large. We also briefly discuss the implications of that scenario.
