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Hadronic light-by-light contribution to [Formula omitted] from lattice QCD: a complete calculation
Ist Teil von
The European physical journal. C, Particles and fields, 2021-07, Vol.81 (7)
Ort / Verlag
Springer
Erscheinungsjahr
2021
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
We compute the hadronic light-by-light scattering contribution to the muon [Formula omitted] from the up, down, and strange-quark sector directly using lattice QCD. Our calculation features evaluations of all possible Wick-contractions of the relevant hadronic four-point function and incorporates several different pion masses, volumes, and lattice-spacings. We obtain a value of [Formula omitted] (adding statistical and systematic errors in quadrature), which is consistent with current phenomenological estimates and a previous lattice determination. It now appears conclusive that the hadronic light-by-light contribution cannot explain the current tension between theory and experiment for the muon [Formula omitted].