Chakraborty, B., Davies, C.T.H. , Koponen, J., Lepage, G.P. and Van de Water, R.S. (2018) Higher-order hadronic-vacuum-polarization contribution to the muon g-2 from lattice QCD. Physical Review D, 98, 094503. (doi: 10.1103/PhysRevD.98.094503)
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Abstract
We introduce a new method for calculating the O ( α 3 ) hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment from ab initio lattice QCD. We first derive expressions suitable for computing the higher-order contributions either from the renormalized vacuum polarization function ^ Π ( q 2 ) or directly from the lattice vector-current correlator in Euclidean space. We then demonstrate the approach using previously published results for the Taylor coefficients of ^ Π ( q 2 ) that were obtained on four-flavor QCD gauge-field configurations with physical light-quark masses. We obtain 10 10 a HVP , HO μ = − 9.3 ( 1.3 ) in agreement with, but with a larger uncertainty than, determinations from e + e − → hadrons data plus dispersion relations.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Koponen, Dr Jonna and Davies, Professor Christine |
| Authors: | Chakraborty, B., Davies, C.T.H., Koponen, J., Lepage, G.P., and Van de Water, R.S. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review D |
| Publisher: | American Physical Society |
| ISSN: | 2470-0010 |
| ISSN (Online): | 2470-0029 |
| Copyright Holders: | Copyright © 2018 American Physical Society |
| First Published: | First published in Physical Review D 98:094503 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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