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

Michele  Della Morte; Anthony Francis; A. Gerardin; Vera Gulpers; Herdoiza Gregorio; G. von Hippel; Hanno Horch; Benjamin Jager; Harvey Meyer; A Nyffeler; Hartmut Wittig

doi:10.1051/epjconf/201817506031

A lattice calculation of the hadronic vacuum polarization contribution to (g-2)_μ

Michele Della Morte, Anthony Francis, A. Gerardin, Vera Gulpers, Herdoiza Gregorio, G. von Hippel, Hanno Horch, Benjamin Jager, Harvey Meyer, A Nyffeler, Hartmut Wittig

Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › peer review

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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 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 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.

Originalsprog	Engelsk
Artikelnummer	06031
Tidsskrift	EPJ Web of Conferences
Vol/bind	175
Antal sider	8
ISSN	2100-014X
DOI	https://doi.org/10.1051/epjconf/201817506031
Status	Udgivet - 26. mar. 2018
Begivenhed	35th International Symposium on Lattice Field Theory - Granada, Spanien Varighed: 18. jun. 2017 → 24. jun. 2017 Konferencens nummer: 35

Konference

Konference	35th International Symposium on Lattice Field Theory
Nummer	35
Land/Område	Spanien
By	Granada
Periode	18/06/2017 → 24/06/2017

Dokumenter og links

10.1051/epjconf/201817506031Licens: CC BY

1710.10072Indsendt manuskript, 609 KB
A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μForlagets udgivne version, 592 KBLicens: CC BY

https://arxiv.org/pdf/1710.10072.pdf

Citationsformater

@inproceedings{a312ca29ea35497b933b7ce245084e07,

title = "A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μ",

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{\"u}scher 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. ",

author = "{Della Morte}, Michele and Anthony Francis and A. Gerardin and Vera Gulpers and Herdoiza Gregorio and {von Hippel}, G. and Hanno Horch and Benjamin Jager and Harvey Meyer and A Nyffeler and Hartmut Wittig",

year = "2018",

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day = "26",

doi = "10.1051/epjconf/201817506031",

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T1 - A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μ

AU - Della Morte, Michele

AU - Francis, Anthony

AU - Gerardin, A.

AU - Gulpers, Vera

AU - Gregorio, Herdoiza

AU - von Hippel, G.

AU - Horch, Hanno

AU - Jager, Benjamin

AU - Meyer, Harvey

AU - Nyffeler, A

AU - Wittig, Hartmut

N1 - Conference code: 35

PY - 2018/3/26

Y1 - 2018/3/26

N2 - 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 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.

AB - 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 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.

U2 - 10.1051/epjconf/201817506031

DO - 10.1051/epjconf/201817506031

M3 - Conference article

SN - 2100-014X

VL - 175

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 06031

T2 - 35th International Symposium on Lattice Field Theory

Y2 - 18 June 2017 through 24 June 2017

ER -