Details

Autor(en) / Beteiligte

• Chao, En-Hung
• Hudspith, Renwick J.
• Gérardin, Antoine
• Green, Jeremy R.
• Meyer, Harvey B.
• Ottnad, Konstantin

Titel

Hadronic light-by-light contribution to (g-2)μ from lattice QCD: a complete calculation

Ist Teil von

• The European physical journal. C, Particles and fields, 2021-07, Vol.81 (7), Article 651

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We compute the hadronic light-by-light scattering contribution to the muon g - 2 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 a μ Hlbl = 106.8 ( 15.9 ) × 10 - 11 (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 g - 2 .