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Title: Four-flavour leading-order hadronic contribution to the muon anomalous magnetic moment

Abstract

We present a four-flavour lattice calculation of the leading-order hadronic vacuum polarisation contribution to the anomalous magnetic moment of the muon, aμhvp, arising from quark-connected Feynman graphs. It is based on ensembles featuring Nf=2+1+1 dynamical twisted mass fermions generated by the European Twisted Mass Collaboration (ETMC). Several light quark masses are used in order to yield a controlled extrapolation to the physical pion mass. We employ three lattice spacings to examine lattice artefacts and several different volumes to check for finite-size effects. Including the complete first two generations of quarks allows for a direct comparison with phenomenological determinations of a μhvp. The final result involving an estimate of the systematic uncertainty aμhvp=6.74 (21)(18) 10-8 shows a good overall agreement with these computations.

Authors:
 [1];  [2];  [1];  [3];  [4];  [5]
  1. Humboldt Univ. zu Berlin, Berlin (Germany)
  2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Univ. of Cyprus, Nicosia (Cyprus)
  4. The Cyprus Institute, Nicosia (Cyprus)
  5. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
The ETM collaboration
OSTI Identifier:
1121883
Report Number(s):
JLAB-THY-13-1771; DOE/OR/23177-2695; arXiv:1308.4327
Journal ID: ISSN 1029-8479; TRN: US1500450
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2014; Journal Issue: 2; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; lattice; muon g-2; muon anomaly; hadronic contribution

Citation Formats

Burger, Florian, Feng, Xu, Hotzel, Grit, Jansen, Karl, Petschlies, Marcus, and Renner, Dru B. Four-flavour leading-order hadronic contribution to the muon anomalous magnetic moment. United States: N. p., 2014. Web. doi:10.1007/JHEP02(2014)099.
Burger, Florian, Feng, Xu, Hotzel, Grit, Jansen, Karl, Petschlies, Marcus, & Renner, Dru B. Four-flavour leading-order hadronic contribution to the muon anomalous magnetic moment. United States. https://doi.org/10.1007/JHEP02(2014)099
Burger, Florian, Feng, Xu, Hotzel, Grit, Jansen, Karl, Petschlies, Marcus, and Renner, Dru B. Mon . "Four-flavour leading-order hadronic contribution to the muon anomalous magnetic moment". United States. https://doi.org/10.1007/JHEP02(2014)099. https://www.osti.gov/servlets/purl/1121883.
@article{osti_1121883,
title = {Four-flavour leading-order hadronic contribution to the muon anomalous magnetic moment},
author = {Burger, Florian and Feng, Xu and Hotzel, Grit and Jansen, Karl and Petschlies, Marcus and Renner, Dru B.},
abstractNote = {We present a four-flavour lattice calculation of the leading-order hadronic vacuum polarisation contribution to the anomalous magnetic moment of the muon, aμhvp, arising from quark-connected Feynman graphs. It is based on ensembles featuring Nf=2+1+1 dynamical twisted mass fermions generated by the European Twisted Mass Collaboration (ETMC). Several light quark masses are used in order to yield a controlled extrapolation to the physical pion mass. We employ three lattice spacings to examine lattice artefacts and several different volumes to check for finite-size effects. Including the complete first two generations of quarks allows for a direct comparison with phenomenological determinations of a μhvp. The final result involving an estimate of the systematic uncertainty aμhvp=6.74 (21)(18) 10-8 shows a good overall agreement with these computations.},
doi = {10.1007/JHEP02(2014)099},
journal = {Journal of High Energy Physics (Online)},
number = 2,
volume = 2014,
place = {United States},
year = {Mon Feb 24 00:00:00 EST 2014},
month = {Mon Feb 24 00:00:00 EST 2014}
}

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A lattice calculation of the hadronic vacuum polarization contribution to ( g – 2) µ
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Leading-order hadronic contributions to the electron and tau anomalous magnetic moments
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The Hadronic Vacuum Polarization and Automatic $\mathcal{O}(a) $ Improvement for Twisted Mass Fermions
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