Strong-Isospin-Breaking Correction to the Muon Anomalous Magnetic Moment from Lattice QCD at the Physical Point
Davies, C. T. H.
El-Khadra, A. X.
Kronfeld, A. S.
Lepage, G. P.
Mackenzie, P. B.
Neil, E. T.
Simone, J. N.
Van de Water, R. S.
AffiliationUniv Arizona, Dept Phys, Tucson, AZ 85721 USA
MetadataShow full item record
PublisherAMER PHYSICAL SOC
CitationFermilab Lattice, H. P. Q. C. D., Collaborations, M. I. L. C., Chakraborty, B., Davies, C. T. H., DeTar, C., El-Khadra, A. X., ... & Kronfeld, A. S. (2018). Strong-isospin-breaking correction to the muon anomalous magnetic moment from lattice QCD at the physical point. Physical Review Letters, 120(15), 152001.
JournalPHYSICAL REVIEW LETTERS
RightsPublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.
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AbstractAll lattice-QCD calculations of the hadronic-vacuum-polarization contribution to the muon's anomalous magnetic moment to date have been performed with degenerate up- and down-quark masses. Here we calculate directly the strong-isospin-breaking correction to a(mu)(HVP) for the first time with physical values of m(u) and m(d) and dynamical u, d, s, and c quarks, thereby removing this important source of systematic uncertainty. We obtain a relative shift to be applied to lattice-QCD results obtained with degenerate light-quark masses of delta a(mu)(HVP,) (mu not equal md) = +1.5(7)%, in agreement with estimates from phenomenology.
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SponsorsOffice of Science of the U.S. Department of Energy; National Science Foundation's Teragrid/XSEDE Program; U.K. Science and Technology Facility Council; U.K. Department for Business, Innovation and Skills; University of Cambridge; University of Glasgow; National Science Foundation [ACI-1532235, ACI-1532236, OCI-0725070, ACI-1238993]; University of Colorado Boulder; Colorado State University; state of Illinois; U.S. Department of Energy [DE-AC05-06OR23177, DE-SC0010120, DE-SC0015655, DE-SC0009998, DE-SC0010005, DE-FG02-13ER41976, DE-SC0012704]; U.S. National Science Foundation [PHY14-17805, PHY14-14614, PHY13-16222, PHY12-12389, PHY13-16748, PHY16-20625]; Royal Society; STFC; Wolfson Foundation; MINECO (Spain) [FPA2013-47836-C-1-P, FPA2016-78220-C3-3-P]; Junta de Andalucia (Spain) [FQM-101]; Fermilab Distinguished Scholars Program; German Excellence Initiative; European Union Seventh Framework Program ; European Union's Marie Curie COFUND program; Blue Waters PAID program; U.K. STFC [ST/N005872/1, ST/P00055X/1]; United States Department of Energy, Office of Science, Office of High Energy Physics [DE-AC02-07CH11359]