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

Danish Institute for Advanced Study

Research output: Contribution to journal › Conference article › Research › 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.

Original language	English
Article number	06031
Journal	E P J Web of Conferences
Volume	175
Number of pages	8
ISSN	2100-014X
DOIs	https://doi.org/10.1051/epjconf/201817506031
Publication status	Published - 26. Mar 2018
Event	35th International Symposium on Lattice Field Theory - Granada, Spain Duration: 18. Jun 2017 → 24. Jun 2017 Conference number: 35

Conference

Conference	35th International Symposium on Lattice Field Theory
Number	35
Country/Territory	Spain
City	Granada
Period	18/06/2017 → 24/06/2017

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10.1051/epjconf/201817506031Licence: CC BY

1710.10072Submitted manuscript, 609 KB
A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μFinal published version, 592 KBLicence: CC BY

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

Cite this

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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",

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language = "English",

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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 Conferences

JF - EPJ Web Conferences

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T2 - 35th International Symposium on Lattice Field Theory

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