Hadronic light-by-light contribution to the muon anomalous magnetic moment from lattice QCD

Understand

We report preliminary results for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment.

• Several ensembles using 2+1 flavors of 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 $a_\mu^{\rm HLbL} = (7.41\pm6.33)\times 10^{-10}$