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Title: Light-quark connected intermediate-window contributions to the muon g 2 hadronic vacuum polarization from lattice QCD

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, $$a^{HVP,LO}_μ$$. 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 $$a^{U,W}_μ$$(conn) = 206.6(1.0) x 10-10 and $$a^{U,W2}_μ$$ (conn) = 100.7(3.2) x 10-10, respectively

Authors:
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Publication Date:
Research Org.:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
Fermilab Lattice, HPQCD and MILC Collaboration
OSTI Identifier:
1985734
Alternate Identifier(s):
OSTI ID: 1923301
Report Number(s):
FERMILAB-PUB-23-006-T; arXiv:2301.08274
Journal ID: ISSN 2470-0010; PRVDAQ; 114514
Grant/Contract Number:  
SC0010005; SC0010120; SC0011090; SC0021006; SC0015655; TG-MCA93S002; AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physical Review. D.
Additional Journal Information:
Journal Name: Physical Review. D. Journal Volume: 107 Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; lattice QCD

Citation Formats

Bazavov, Alexei, Davies, Christine, DeTar, Carleton, El-Khadra, Aida X., Gámiz, Elvira, Gottlieb, Steven, Jay, William I., Jeong, Hwancheol, Kronfeld, Andreas S., Lahert, Shaun, Lepage, G. Peter, Lynch, Michael, Lytle, Andrew T., Mackenzie, Paul B., McNeile, Craig, Neil, Ethan T., Peterson, Curtis T., Ray, Gaurav, Simone, James N., Van de Water, Ruth S., Vaquero, Alejandro, and Fermilab Lattice, HPQCD, and MILC Collaborations. Light-quark connected intermediate-window contributions to the muon g − 2 hadronic vacuum polarization from lattice QCD. United States: N. p., 2023. Web. doi:10.1103/PhysRevD.107.114514.
Bazavov, Alexei, Davies, Christine, DeTar, Carleton, El-Khadra, Aida X., Gámiz, Elvira, Gottlieb, Steven, Jay, William I., Jeong, Hwancheol, Kronfeld, Andreas S., Lahert, Shaun, Lepage, G. Peter, Lynch, Michael, Lytle, Andrew T., Mackenzie, Paul B., McNeile, Craig, Neil, Ethan T., Peterson, Curtis T., Ray, Gaurav, Simone, James N., Van de Water, Ruth S., Vaquero, Alejandro, & Fermilab Lattice, HPQCD, and MILC Collaborations. Light-quark connected intermediate-window contributions to the muon g − 2 hadronic vacuum polarization from lattice QCD. United States. https://doi.org/10.1103/PhysRevD.107.114514
Bazavov, Alexei, Davies, Christine, DeTar, Carleton, El-Khadra, Aida X., Gámiz, Elvira, Gottlieb, Steven, Jay, William I., Jeong, Hwancheol, Kronfeld, Andreas S., Lahert, Shaun, Lepage, G. Peter, Lynch, Michael, Lytle, Andrew T., Mackenzie, Paul B., McNeile, Craig, Neil, Ethan T., Peterson, Curtis T., Ray, Gaurav, Simone, James N., Van de Water, Ruth S., Vaquero, Alejandro, and Fermilab Lattice, HPQCD, and MILC Collaborations. Tue . "Light-quark connected intermediate-window contributions to the muon g − 2 hadronic vacuum polarization from lattice QCD". United States. https://doi.org/10.1103/PhysRevD.107.114514.
@article{osti_1985734,
title = {Light-quark connected intermediate-window contributions to the muon g − 2 hadronic vacuum polarization from lattice QCD},
author = {Bazavov, Alexei and Davies, Christine and DeTar, Carleton and El-Khadra, Aida X. and Gámiz, Elvira and Gottlieb, Steven and Jay, William I. and Jeong, Hwancheol and Kronfeld, Andreas S. and Lahert, Shaun and Lepage, G. Peter and Lynch, Michael and Lytle, Andrew T. and Mackenzie, Paul B. and McNeile, Craig and Neil, Ethan T. and Peterson, Curtis T. and Ray, Gaurav and Simone, James N. and Van de Water, Ruth S. and Vaquero, Alejandro and Fermilab Lattice, HPQCD, and MILC Collaborations},
abstractNote = {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, $a^{HVP,LO}_μ$. 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 $a^{U,W}_μ$(conn) = 206.6(1.0) x 10-10 and $a^{U,W2}_μ$ (conn) = 100.7(3.2) x 10-10, respectively},
doi = {10.1103/PhysRevD.107.114514},
journal = {Physical Review. D.},
number = 11,
volume = 107,
place = {United States},
year = {Tue Jun 20 00:00:00 EDT 2023},
month = {Tue Jun 20 00:00:00 EDT 2023}
}

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