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

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 (Universidad de Zaragoza) ;

Resumen: 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,LOμ. 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(conn)=206.6(1.0)×10−10 and all,W2μ(conn)=100.7(3.2)×10−10, respectively.

Idioma: Inglés

DOI: 10.1103/PhysRevD.107.114514

Año: 2023

Publicado en: Physical Review D 107, 11 (2023), 114514 [27 pp.]
ISSN: 2470-0010

Factor impacto JCR: 4.6 (2023)

Categ. JCR: PHYSICS, PARTICLES & FIELDS rank: 7 / 31 = 0.226 (2023) - Q1 - T1
Categ. JCR: ASTRONOMY & ASTROPHYSICS rank: 17 / 84 = 0.202 (2023) - Q1 - T1

Factor impacto CITESCORE: 9.3 - Nuclear and High Energy Physics (Q1)

Factor impacto SCIMAGO: 1.587 - Physics and Astronomy (miscellaneous) (Q1) - Nuclear and High Energy Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2019-106087GB-C21
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RYC2020-030244-I

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Teórica (Dpto. Física Teórica)