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Title: Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD

Abstract

The quark-line disconnected diagram is a potentially important ingredient in lattice QCD calculations of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. It is also a notoriously difficult one to evaluate. Here, for the first time, we give an estimate of this contribution based on lattice QCD results that have a statistically significant signal, albeit at one value of the lattice spacing and an unphysically heavy value of the u/d quark mass. We use HPQCD’s method of determining the anomalous magnetic moment by reconstructing the Adler function from time moments of the current-current correlator at zero spatial momentum. Our results lead to a total (including u, d and s quarks) quark-line disconnected contribution to a μ of –0.15% of the u/d hadronic vacuum polarization contribution with an uncertainty which is 1% of that contribution.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1250189
Alternate Identifier(s):
OSTI ID: 1565502
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 93 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics

Citation Formats

Chakraborty, Bipasha, Davies, C. T. H., Koponen, J., Lepage, G. P., Peardon, M. J., and Ryan, S. M. Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.074509.
Chakraborty, Bipasha, Davies, C. T. H., Koponen, J., Lepage, G. P., Peardon, M. J., & Ryan, S. M. Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD. United States. doi:10.1103/PhysRevD.93.074509.
Chakraborty, Bipasha, Davies, C. T. H., Koponen, J., Lepage, G. P., Peardon, M. J., and Ryan, S. M. Fri . "Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD". United States. doi:10.1103/PhysRevD.93.074509.
@article{osti_1250189,
title = {Estimate of the hadronic vacuum polarization disconnected contribution to the anomalous magnetic moment of the muon from lattice QCD},
author = {Chakraborty, Bipasha and Davies, C. T. H. and Koponen, J. and Lepage, G. P. and Peardon, M. J. and Ryan, S. M.},
abstractNote = {The quark-line disconnected diagram is a potentially important ingredient in lattice QCD calculations of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. It is also a notoriously difficult one to evaluate. Here, for the first time, we give an estimate of this contribution based on lattice QCD results that have a statistically significant signal, albeit at one value of the lattice spacing and an unphysically heavy value of the u/d quark mass. We use HPQCD’s method of determining the anomalous magnetic moment by reconstructing the Adler function from time moments of the current-current correlator at zero spatial momentum. Our results lead to a total (including u, d and s quarks) quark-line disconnected contribution to aμ of –0.15% of the u/d hadronic vacuum polarization contribution with an uncertainty which is 1% of that contribution.},
doi = {10.1103/PhysRevD.93.074509},
journal = {Physical Review D},
issn = {2470-0010},
number = 7,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevD.93.074509

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Cited by: 12 works
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    Works referencing / citing this record:

    Lattice Calculations and the Muon Anomalous Magnetic Moment
    journal, May 2017