Muon g-2 with overlap valence fermions

Gen Wang, Terrence Draper, Keh Fei Liu, Yi Bo Yang

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18 Scopus citations

Abstract

We present a lattice calculation of the leading order hadronic vacuum polarization contribution to the muon anomalous magnetic moment for the connected light and strange quarks, acon,l/sW in the widely used window t0=0.4 fm, t1=1.0 fm, Δ=0.15 fm, and also of acon,l/sS in the short distance region. We use overlap fermions on four physical-point ensembles. Two 2+1 flavor RBC/UKQCD ensembles use domain wall fermions and Iwasaki gauge actions at a=0.084 and 0.114 fm, and two 2+1+1 flavor MILC ensembles use the highly improved staggered quark and Symanzik gauge actions at a=0.088 and 0.121 fm. We have incorporated infinite volume corrections from three additional domain wall fermion ensembles at L=4.8, 6.4, and 9.6 fm and physical pion mass. For acon,lW, we find that our results on the two smaller lattice spacings are consistent with those using the unitary setup, but those at the two coarser lattice spacings are slightly different. Eventually, we predict acon,lW=206.7(1.5)(1.0) and acon,sW=26.8(0.1)(0.3), using linear extrapolation in a2, with systematic uncertainties estimated from the difference of the central values from the RBC/UKQCD and MILC ensembles.

Original languageEnglish
Article number034513
JournalPhysical Review D
Volume107
Issue number3
DOIs
StatePublished - Feb 1 2023

Bibliographical note

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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