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

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Resumé

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.

OriginalsprogEngelsk
Artikelnummer06031
TidsskriftE P J Web of Conferences
Vol/bind175
Antal sider8
ISSN2100-014X
DOI
StatusUdgivet - 26. mar. 2018
Begivenhed35th International Symposium on Lattice Field Theory - Granada, Spanien
Varighed: 18. jun. 201724. jun. 2017
Konferencens nummer: 35

Konference

Konference35th International Symposium on Lattice Field Theory
Nummer35
LandSpanien
ByGranada
Periode18/06/201724/06/2017

Fingeraftryk

vacuum
polarization
parameterization
form factors
muons
pions
quantum chromodynamics
magnetic moments
diagrams
quarks
formalism

Citer dette

Della Morte, M., Francis, A., Gerardin, A., Gulpers, V., Gregorio, H., von Hippel, G., ... Wittig, H. (2018). A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μ. E P J Web of Conferences, 175, [06031]. https://doi.org/10.1051/epjconf/201817506031
Della Morte, Michele ; Francis, Anthony ; Gerardin, A. ; Gulpers, Vera ; Gregorio, Herdoiza ; von Hippel, G. ; Horch, Hanno ; Jager, Benjamin ; Meyer, Harvey ; Nyffeler, A ; Wittig, Hartmut. / A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μ. I: E P J Web of Conferences. 2018 ; Bind 175.
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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.",
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Della Morte, M, Francis, A, Gerardin, A, Gulpers, V, Gregorio, H, von Hippel, G, Horch, H, Jager, B, Meyer, H, Nyffeler, A & Wittig, H 2018, 'A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μ', E P J Web of Conferences, bind 175, 06031. https://doi.org/10.1051/epjconf/201817506031

A lattice calculation of the hadronic vacuum polarization contribution to (g-2)μ. / Della Morte, Michele ; Francis, Anthony; Gerardin, A.; Gulpers, Vera; Gregorio, Herdoiza; von Hippel, G.; Horch, Hanno; Jager, Benjamin; Meyer, Harvey; Nyffeler, A; Wittig, Hartmut.

I: E P J Web of Conferences, Bind 175, 06031, 26.03.2018.

Publikation: Bidrag til tidsskriftKonferenceartikelForskningpeer review

TY - GEN

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

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

VL - 175

JO - E P J Web of Conferences

JF - E P J Web of Conferences

SN - 2100-014X

M1 - 06031

ER -