A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ

Publication type:
Journal article
Metadata:
Abstract
<jats:p>We present results of calculations of the hadronic vacuum polarisation contribution to the muon anomalous magnetic moment. Specifically, we focus on controlling the infrared regime of the vacuum polarisation function. Our results are corrected for finite-size effects by combining the Gounaris-Sakurai parameterisation of the timelike pion form factor with the Lüscher formalism. The impact of quark-disconnected diagrams and the precision of the scale determination is discussed and included in our final result in two-flavour QCD, which carries an overall uncertainty of 6%. We present preliminary results computed on ensembles with <jats:italic>N</jats:italic><jats:sub>f</jats:sub> = 2 + 1 dynamical flavours and discuss how the long-distance contribution can be accurately constrained by a dedicated spectrum calculation in the iso-vector channel.</jats:p>
Autoren
  • M Della Morte
  • A Francis
  • A Gérardin
  • V Gülpers
  • G Herdoíza
  • G von Hippel
  • H Horch
  • B Jäger
  • HB Meyer
  • A Nyffeler
  • H Wittig
DOI
10.1051/epjconf/201817506031
Editoren
  • M Della Morte
  • P Fritzsch
  • E Gámiz Sánchez
  • C Pena Ruano
eISSN
2100-014X
Zeitschrift
EPJ Web of Conferences
Online publication date
2018
Paginierung
06031 - 06031
Datum der Veröffentlichung
2018
Status
Published
Herausgeber
EDP Sciences
Herausgeber URL
http://dx.doi.org/10.1051/epjconf/201817506031
Datum der Datenerfassung
2020
Titel
A lattice calculation of the hadronic vacuum polarization contribution to (<i>g</i> – 2)<sub><i>µ</i></sub>
Ausgabe der Zeitschrift
175

Data source: Crossref

Other metadata sources:
Abstract
We present results of calculations of the hadronic vacuum polarisation contribution to the muon anomalous magnetic moment. Specifically, we focus on controlling the infrared regime of the vacuum polarisation function. Our results are corrected for finite-size effects by combining the Gounaris-Sakurai parameterisation of the timelike pion form factor with the L\"uscher formalism. The impact of quark-disconnected diagrams and the precision of the scale determination is discussed and included in our final result in two-flavour QCD, which carries an overall uncertainty of 6%. We present preliminary results computed on ensembles with $N_f=2+1$ dynamical flavours and discuss how the long-distance contribution can be accurately constrained by a dedicated spectrum calculation in the iso-vector channel.
Autoren
  • M Della Morte
  • A Francis
  • A Gérardin
  • V Gülpers
  • G Herdoiza
  • G von Hippel
  • H Horch
  • B Jäger
  • HB Meyer
  • A Nyffeler
  • H Wittig
Autoren-URL
http://arxiv.org/abs/1710.10072v1
Schlüsselwörter
  • hep-lat
  • hep-lat
  • hep-ph
Notes
8 pages, 4 figures; To appear in: Proceedings of the 35th International Symposium on Lattice Field Theory (Lattice 2017), Granada, Spain
Datum der Veröffentlichung
2017
Herausgeber URL
http://dx.doi.org/10.1051/epjconf/201817506031
Datum der Datenerfassung
2017
Datum, an dem der Datensatz öffentlich gemacht wurde
2017
Titel
A lattice calculation of the hadronic vacuum polarization contribution to $(g-2)_μ$

Files

1710.10072v1.pdf

Data source: arXiv

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