Calculation of the Hadronic Vacuum Polarization Contribution to the Muon Anomalous Magnetic Moment

Blum, T. (Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, USA) ; Boyle, P. A. (School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom) ; Gülpers, V. (School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom) ; Izubuchi, T. (Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA) (RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973, USA) ; Jin, L. (Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, USA) (RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973, USA) ; Jung, C. (Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA) ; Jüttner, A. (School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom) ; Lehner, C. (Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA) ; Portelli, A. (School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom) ; Tsang, J. T. (School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, United Kingdom)

13 July 2018

Abstract: 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 aμHVP LO=715.4(18.7)×1010. By supplementing lattice data for very short and long distances with R-ratio data, we significantly improve the precision to aμHVP LO=692.5(2.7)×1010. This is the currently most precise determination of aμHVP LO.


Published in: Physical Review Letters 121 (2018)
Published by: APS
DOI: 10.1103/PhysRevLett.121.022003
arXiv: 1801.07224
License: CC-BY-4.0



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