Vacuum polarization and hadronic contribution to muon g - 2 from lattice QCD

Göckeler, M, Horsley, R, Kürzinger, W, Pleiter, D, Rakow, PEL ORCID: 0000-0003-4486-2158 and Schierholz, G (2004) Vacuum polarization and hadronic contribution to muon g - 2 from lattice QCD Nuclear Physics B, 688 (1-2). pp. 135-164. ISSN 0550-3213

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Abstract

We compute the vacuum polarization on the lattice in quenched QCD using non-perturbatively improved Wilson fermions. Above Q² of about 2 GeV² the results are very close to the predictions of perturbative QCD. Below this scale we see signs of non-perturbative effects which we can describe by the use of dispersion relations. We use our results to estimate the light quark contribution to the muon's anomalous magnetic moment. We find the result 446(23)×10^-10, where the error only includes statistical uncertainties. Finally we make some comments on the applicability of the operator product expansion to our data. © 2004 Elsevier B.V. All rights reserved.

Item Type:	Article
Additional Information:	38 pages, 15 figures
Uncontrolled Keywords:	QCD, Lattice, e(+)e(-) annihilation, muon anomalous magnetic moment
Subjects:	?? QC ??
Divisions:	Faculty of Science & Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	19 Aug 2008 09:27
Last Modified:	28 Feb 2026 17:47
DOI:	10.1016/j.nuclphysb.2004.03.026
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/491
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