Strong-Isospin-Breaking Correction to the Muon Anomalous Magnetic Moment from Lattice QCD at the Physical Point

Fermilab Lattice, HPQCD, and MILC Collaborations

doi:10.1103/PhysRevLett.120.152001

Strong-Isospin-Breaking Correction to the Muon Anomalous Magnetic Moment from Lattice QCD at the Physical Point

Fermilab Lattice, HPQCD, and MILC Collaborations

Department of Physics

Research output: Contribution to journal › Article › peer-review

75 Scopus citations

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 aμHVP 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 δaμHVP,mu≠md=+1.5(7)%, in agreement with estimates from phenomenology.

Original language	English (US)
Article number	152001
Journal	Physical Review Letters
Volume	120
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.120.152001
State	Published - Apr 12 2018

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.120.152001

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@article{3fba96b08c414dccb3be6ff0cc3e18a8,

title = "Strong-Isospin-Breaking Correction to the Muon Anomalous Magnetic Moment from Lattice QCD at the Physical Point",

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 aμHVP 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 δaμHVP,mu≠md=+1.5(7)%, in agreement with estimates from phenomenology.",

author = "{Fermilab Lattice, HPQCD, and MILC Collaborations} and B. Chakraborty and Davies, {C. T.H.} and C. Detar and El-Khadra, {A. X.} and E. G{\'a}miz and Steven Gottlieb and D. Hatton and J. Koponen and Kronfeld, {A. S.} and J. Laiho and Lepage, {G. P.} and Yuzhi Liu and Mackenzie, {P. B.} and C. McNeile and Neil, {E. T.} and Simone, {J. N.} and R. Sugar and D. Toussaint and {Van De Water}, {R. S.} and A. Vaquero",

note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",

year = "2018",

month = apr,

day = "12",

doi = "10.1103/PhysRevLett.120.152001",

language = "English (US)",

volume = "120",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "15",

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T1 - Strong-Isospin-Breaking Correction to the Muon Anomalous Magnetic Moment from Lattice QCD at the Physical Point

AU - Fermilab Lattice, HPQCD, and MILC Collaborations

AU - Chakraborty, B.

AU - Davies, C. T.H.

AU - Detar, C.

AU - El-Khadra, A. X.

AU - Gámiz, E.

AU - Gottlieb, Steven

AU - Hatton, D.

AU - Koponen, J.

AU - Kronfeld, A. S.

AU - Laiho, J.

AU - Lepage, G. P.

AU - Liu, Yuzhi

AU - Mackenzie, P. B.

AU - McNeile, C.

AU - Neil, E. T.

AU - Simone, J. N.

AU - Sugar, R.

AU - Toussaint, D.

AU - Van De Water, R. S.

AU - Vaquero, A.

PY - 2018/4/12

Y1 - 2018/4/12

N2 - 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 aμHVP 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 δaμHVP,mu≠md=+1.5(7)%, in agreement with estimates from phenomenology.

AB - 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 aμHVP 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 δaμHVP,mu≠md=+1.5(7)%, in agreement with estimates from phenomenology.

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DO - 10.1103/PhysRevLett.120.152001

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Strong-Isospin-Breaking Correction to the Muon Anomalous Magnetic Moment from Lattice QCD at the Physical Point

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