ORCID

Abstract

We present a lattice-QCD calculation of the light-quark connected contribution to window observables associated with the leading-order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, aHVP;LO μ . We employ the MILC Collaboration’s isospin-symmetric QCD gauge-field ensembles, which contain four flavors of dynamical highly improved staggered quarks with four lattice spacings between a ≈ 0.06–0.15 fm and close-to-physical quark masses. We consider several effective field-theory-based schemes for finite volume and other lattice corrections and combine the results via Bayesian model averaging to obtain robust estimates of the associated systematic uncertainties. After unblinding, our final results for the intermediate and “W2” windows are all;Wμ ðconnÞ ¼ 206.6ð1.0Þ × 10−10 and all;W2 μ ðconnÞ ¼ 100.7ð3.2Þ × 10−10, respectively.

Publication Date

2023-06-20

Publication Title

Physical Review D

Volume

107

Issue

11

ISSN

2470-0010

Acceptance Date

2023-04-28

Deposit Date

2023-06-22

Embargo Period

2023-06-23

Funding

This work was supported in part by the U.S. Department of Energy, Office of Science, under Awards No. DE-SC0010005 (E. T. N.), No. DE-SC0010120 (S. G.), No. DE-SC0011090 and No. DE-SC0021006 (W. J.), No. DE-SC0015655 (A. X. K., S. L., M. L., A. T. L.), and the Funding Opportunity Announcement Scientific Discovery through Advanced Computing: High Energy Physics, LAB 22-2580; by the National Science Foundation under Grants No. PHY17-19626 and No. PHY20-13064 (C. E. D., A. V.) and from their Graduate Research Fellowship under Grant No. DGE 2040434 (C. T.P); by the Simons Foundation under their Simons Fellows in Theoretical Physics program (A. X. K.); by the Universities Research Association Visiting Scholarship Awards No. 20-S-12 and No. 21-S-05 (S. L.); by SRA (Spain) under Grant No. PID2019–106087 GB-C21/10.13039/501100011033 (E. G.); by the Junta de Andalucía (Spain) under Grants No. FQM-101, No. A-FQM-467-UGR18 (FEDER), and No. P18-FR-4314 (E. G.); by AEI (Spain) under Grant No. RYC2020-030244-I/AEI/10.13039/501100011033 (A. V.); and by U.K. Science and Technology Facilities Council under Grant No. ST/T000945/1 (C. T. H.D). This document was prepared by the Fermilab Lattice, HPQCD, and MILC Collaborations using the resources of the Fermi National Accelerator Laboratory (Fermilab), a U.S. Department of Energy, Office of Science, HEP User Facility. Fermilab is managed by Fermi Research Alliance, LLC (FRA), acting under Contract No. DE-AC02-07CH11359.

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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