标题： 来自格点QCD的强子光-光散射对μ子反常磁矩的贡献 显示英文标题

标题： The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD

摘要： 我们报告了对μ子反常磁矩的强子光-光散射贡献的第一个结果，并系统地控制了所有误差。 使用由RBC/UKQCD合作组生成的2+1味物理质量Möbius域墙费米子的多个集合，以获得有限体积格点QED+QCD的连续极限和无限体积极限。 我们发现$a_\mu^{\rm HLbL} = 7.87(3.06)_\text{stat}(1.77)_\text{sys}\times 10^{-10}$。 我们的值与之前模型结果一致，并且对于这一众所周知难以处理的强子贡献来说，留给解释标准模型与BNL实验之间差异的空间很小。 显示英文摘要

摘要： We report the first result for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment with all errors systematically controlled. Several ensembles using 2+1 flavors of physical mass M\"obius domain-wall fermions, generated by the RBC/UKQCD collaborations, are employed to take the continuum and infinite volume limits of finite volume lattice QED+QCD. We find $a_\mu^{\rm HLbL} = 7.87(3.06)_\text{stat}(1.77)_\text{sys}\times 10^{-10}$. Our value is consistent with previous model results and leaves little room for this notoriously difficult hadronic contribution to explain the difference between the Standard Model and the BNL experiment.