| Full text | |
| Author(s): |
Boito, Diogo
;
Golterman, Maarten
;
Maltman, Kim
;
Peris, Santiago
Total Authors: 4
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 105, n. 9, p. 18-pg., 2022-05-16. |
| Abstract | |
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) | |
| FAPESP's process: | 21/06756-6 - Testing the standard model: precision QCD and muon g-2 |
| Grantee: | Diogo Rodrigues Boito |
| Support Opportunities: | Research Grants - Young Investigators Grants - Phase 2 |