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Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation
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 differ...
| Autores principales: | , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1140/epjc/s10052-021-09455-4 http://cds.cern.ch/record/2760973 |
| _version_ | 1780970446242447360 |
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| author | Chao, En-Hung Hudspith, Renwick J. Gérardin, Antoine Green, Jeremy R. Meyer, Harvey B. Ottnad, Konstantin |
| author_facet | Chao, En-Hung Hudspith, Renwick J. Gérardin, Antoine Green, Jeremy R. Meyer, Harvey B. Ottnad, Konstantin |
| author_sort | Chao, En-Hung |
| collection | CERN |
| description | 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 $a_\mu ^{\text {Hlbl}}= 106.8(15.9) \times 10^{-11}$ (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 $g-2$. |
| id | cern-2760973 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2021 |
| record_format | invenio |
| spelling | cern-27609732023-01-31T09:14:01Zdoi:10.1140/epjc/s10052-021-09455-4http://cds.cern.ch/record/2760973engChao, En-HungHudspith, Renwick J.Gérardin, AntoineGreen, Jeremy R.Meyer, Harvey B.Ottnad, KonstantinHadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculationhep-phParticle Physics - Phenomenologyhep-latParticle Physics - LatticeWe 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 $a_\mu ^{\text {Hlbl}}= 106.8(15.9) \times 10^{-11}$ (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 $g-2$.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 $a_\mu^{\text{Hlbl}} = 106.8(14.7) \times 10^{-11}$ (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 $g-2$.arXiv:2104.02632oai:cds.cern.ch:27609732021-04-06 |
| spellingShingle | hep-ph Particle Physics - Phenomenology hep-lat Particle Physics - Lattice Chao, En-Hung Hudspith, Renwick J. Gérardin, Antoine Green, Jeremy R. Meyer, Harvey B. Ottnad, Konstantin Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation |
| title | Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation |
| title_full | Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation |
| title_fullStr | Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation |
| title_full_unstemmed | Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation |
| title_short | Hadronic light-by-light contribution to $(g-2)_\mu $ from lattice QCD: a complete calculation |
| title_sort | hadronic light-by-light contribution to $(g-2)_\mu $ from lattice qcd: a complete calculation |
| topic | hep-ph Particle Physics - Phenomenology hep-lat Particle Physics - Lattice |
| url | https://dx.doi.org/10.1140/epjc/s10052-021-09455-4 http://cds.cern.ch/record/2760973 |
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