在类空区域测量强子对缪子g-2因子的领头阶贡献（英文）

Measuringthe leadingorder hadronic contribution to the muon g-2 in the space-like region

最近提出了一种确定缪子领头阶强子修正项的新方法,基于从Bhabha散射数据提取的类空区域有效电磁耦合的测量.新方法对于味工厂是可行的,可作为一种可选方案,其精度与基于类时数据的色散方法所做的评估是有竞争性的.

Recently a novel approach to determining the leading hadronic corrections to the muon g-2 has been proposed.It consists in a measurement of the effective electromagnetic coupling in the space-like region extracted from Bhabha scattering data.The new method may become feasible at flavor factories,leading to an alternative determination,possibly competitive with the accuracy of the present evaluations based on the dispersive approach via time-like data.