| Texto completo | |
| Autor(es): |
Boito, Diogo
;
Golterman, Maarten
;
Maltman, Kim
;
Peris, Santiago
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 105, n. 9, p. 18-pg., 2022-05-16. |
| Resumo | |
We point out that the sum of the strange-quark-connected and full three-flavor quark-disconnected contributions to the leading-order hadronic vacuum polarization contribution, a(mu)(LO,HVP), to the anomalous magnetic moment of the muon is a physical observable, and we provide a data-based determination of this quantity in the isospin limit. The result, 40.1(1.5) x 10(-10) or 38.7(2.0) x 10(-10), depending on which data compilation is used, serves as a target of comparison for lattice calculations of the same isospin-limit combination. Subtracting from this result the average of lattice determinations of the strange-quark-connected contribution, one also obtains an alternate determination of the isospin-limit three-flavor disconnected contribution to a(mu)(LO,HVP). The result of this determination, -13.3(1.5) x 10(-10) or -14.6(2.0) x 10(-10), depending on which data compilation is used, agrees well and is competitive with the most precise current lattice determination. (AU) | |
| Processo FAPESP: | 21/06756-6 - Testes do modelo padrão: QCD de precisão e g-2 do múon |
| Beneficiário: | Diogo Rodrigues Boito |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores - Fase 2 |