Hadronic Light-by-Light Scattering Contribution to the Muon Anomalous Magnetic Moment from Lattice QCD
Thomas Blum, Norman H. Christ, Masashi Hayakawa, Taku Izubuchi, Luchang Jin, Chulwoo Jung, Christoph Lehner
Abstract
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 Mbius domain-wall fermions, generated by the RBC and UKQCD collaborations, are employed to take the continuum and infinite volume limits of finite volume lattice QED QCD. We find a HLbL 7.873.06 stat 1.77 sys 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.
Topics & Concepts
Anomalous magnetic dipole momentPhysicsMuonParticle physicsHadronScatteringFermionLattice QCDQuantum chromodynamicsLattice (music)Magnetic momentVacuum polarizationLattice field theoryNuclear physicsCondensed matter physicsQuantum mechanicsAcousticsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research