Lattice calculation of hadronic light-by-light contribution to the muon anomalous magnetic moment

2015/10/24 by Thomas Blum, Norman H. Christ, Norman Christ +4 · 4 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Condensed matter physics #Fermion #Hadron #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Magnetic moment #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #Scattering #hep-lat #hep-ph

paper · pdf · doi:10.1103/physrevd.93.014503

published as Phys. Rev. D 93, 014503 (2016) · 52 pages

arxiv created 2015/10/24 · openalex publication_date 2016/01/12 · arxiv updated 2016/01/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The quark-connected part of the hadronic light-by-light scattering contribution to the muon's anomalous magnetic moment is computed using lattice QCD with chiral fermions. We report several significant algorithmic improvements and demonstrate their effectiveness through specific calculations which show a reduction in statistical errors by more than an order of magnitude. The most realistic of these calculations is performed with a near-physical 171 MeV pion mass on a (4.6 fm)³ spatial volume using the 32³\ifmmode×\else\texttimes\fi64 Iwasaki+DSDR gauge ensemble of the RBC/UKQCD Collaboration.

Citations

• Final report of the E821 muon anomalous magnetic moment measurement at BNL

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