Chakraborty, B., Davies, C. T. H. , de Oliveira, P.G., Koponen, J. and Lepage, G.P. (2017) The hadronic vacuum polarization contribution to aµ from full lattice QCD. Physical Review D, 96(3), 034516. (doi: 10.1103/PhysRevD.96.034516)
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Abstract
We determine the contribution to the anomalous magnetic moment of the muon from the α2 QED hadronic vacuum polarization diagram using full lattice QCD and including u=d quarks with physical masses for the first time. We use gluon field configurations that include u, d, s and c quarks in the sea at multiple values of the lattice spacing, multiple u=d masses and multiple volumes that allow us to include an analysis of finite-volume effects. We obtain a result for aHVP;LO μ of 667ð6Þð12Þ × 10−10, where the first error is from the lattice calculation and the second includes systematic errors from missing QED and isospin-breaking effects and from quark-line disconnected diagrams. Our result implies a discrepancy between the experimental determination of aμ and the Standard Model of 3σ.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Davies, Professor Christine and Koponen, Dr Jonna |
Authors: | Chakraborty, B., Davies, C. T. H., de Oliveira, P.G., Koponen, J., and Lepage, G.P. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Physical Review D |
Publisher: | American Physical Society |
ISSN: | 1550-7998 |
ISSN (Online): | 1550-2368 |
Published Online: | 22 August 2017 |
Copyright Holders: | Copyright © 2017 American Physical Society |
First Published: | First published in Physical Review D 96(3):034516 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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