A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ
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-Sakura...
| Published in: | EPJ Web of Conferences |
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| Main Authors: | , , , , , , , , , , |
| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Online Access: | https://doi.org/10.1051/epjconf/201817506031 |
| _version_ | 1852820321792425984 |
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| author | Della Morte M. Francis A. Gérardin A. Gülpers V. Herdoíza G. von Hippel G. Horch H. Jäger B. Meyer H.B. Nyffeler A. Wittig H. |
| author_facet | Della Morte M. Francis A. Gérardin A. Gülpers V. Herdoíza G. von Hippel G. Horch H. Jäger B. Meyer H.B. Nyffeler A. Wittig H. |
| author_sort | Della Morte M. |
| collection | DOAJ |
| container_title | EPJ Web of Conferences |
| description | 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 Nf = 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. |
| format | Article |
| id | doaj-art-db6db2cbf2d64607b480f1e8ab4eb680 |
| institution | Directory of Open Access Journals |
| issn | 2100-014X |
| language | English |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| spelling | doaj-art-db6db2cbf2d64607b480f1e8ab4eb6802025-08-19T20:32:29ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011750603110.1051/epjconf/201817506031epjconf_lattice2018_06031A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µDella Morte M.Francis A.Gérardin A.Gülpers V.Herdoíza G.von Hippel G.Horch H.Jäger B.Meyer H.B.Nyffeler A.Wittig H.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 Nf = 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.https://doi.org/10.1051/epjconf/201817506031 |
| spellingShingle | Della Morte M. Francis A. Gérardin A. Gülpers V. Herdoíza G. von Hippel G. Horch H. Jäger B. Meyer H.B. Nyffeler A. Wittig H. A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ |
| title | A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ |
| title_full | A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ |
| title_fullStr | A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ |
| title_full_unstemmed | A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ |
| title_short | A lattice calculation of the hadronic vacuum polarization contribution to (g – 2)µ |
| title_sort | lattice calculation of the hadronic vacuum polarization contribution to g 2 µ |
| url | https://doi.org/10.1051/epjconf/201817506031 |
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