Strong-isospin-breaking correction to the muon anomalous magnetic moment from lattice QCD at the physical point

B. Chakraborty, C. T.H. Davies, C. DeTar, A. X. El-Khadra, E. Gámiz, Steven Gottlieb, D. Hatton, J. Koponen, A. S. Kronfeld, J. Laiho, G. P. Lepage, Yuzhi Liu, P. B. Mackenzie, C. McNeile, E. T. Neil, J. N. Simone, R. Sugar, D. Toussaint, R. S. van de Water, A. Vaquero

Research output: Contribution to journalArticlepeer-review

Abstract

All 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 aHVPµ for the first time with physical values of mu and md 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 δaHVP µ,mu6=md= +1.5(7)%, in agreement with estimates from phenomenology.

Original languageEnglish (US)
JournalUnknown Journal
StatePublished - Oct 30 2017

ASJC Scopus subject areas

  • General

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