E-viri
PDF
Recenzirano
Odprti dostop
-
Blum, T; Boyle, P A; Gülpers, V; Izubuchi, T; Jin, L; Jung, C; Jüttner, A; Lehner, C; Portelli, A; Tsang, J T
Physical review letters, 07/2018, Letnik: 121, Številka: 2Journal Article
We present a first-principles lattice QCD+QED calculation at physical pion mass of the leading-order hadronic vacuum polarization contribution to the muon anomalous magnetic moment. The total contribution of up, down, strange, and charm quarks including QED and strong isospin breaking effects is a_{μ}^{HVP LO}=715.4(18.7)×10^{-10}. By supplementing lattice data for very short and long distances with R-ratio data, we significantly improve the precision to a_{μ}^{HVP LO}=692.5(2.7)×10^{-10}. This is the currently most precise determination of a_{μ}^{HVP LO}.
