Hadronic light-by-light scattering contribution to the muon g – 2 on the lattice
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
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- Abstract
- <jats:p>We briefly review several activities at Mainz related to hadronic light-by-light scattering (HLbL) using lattice QCD. First we present a position-space approach to the HLbL contribution in the muon g̅2, where we focus on exploratory studies of the pion-pole contribution in a simple model and the lepton loop in QED in the continuum and in infinite volume. The second part describes a lattice calculation of the double-virtual pion transition form factor Fπ0γ*γ* (q<jats:sup>2</jats:sup><jats:sub>1</jats:sub>; q<jats:sup>2</jats:sup><jats:sub>1</jats:sub>) in the spacelike region with photon virtualities up to 1.5 GeV<jats:sup>2</jats:sup> which paves the way for a lattice calculation of the pion-pole contribution to HLbL. The third topic involves HLbL forward scattering amplitudes calculated in lattice QCD which can be described, using dispersion relations (HLbL sum rules), by γ*γ* → hadrons fusion cross sections and then compared with phenomenological models.</jats:p>
- Autoren
- Nils Asmussen
- Antoine Gérardin
- Jeremy Green
- Oleksii Gryniuk
- Georg von Hippel
- Harvey B Meyer
- Andreas Nyffeler
- Vladimir Pascalutsa
- Hartmut Wittig
- DOI
- 10.1051/epjconf/201817901017
- Editoren
- G D’Ambrosio
- M Iacovacci
- S Mastroianni
- M Passera
- G Venanzoni
- eISSN
- 2100-014X
- Zeitschrift
- EPJ Web of Conferences
- Online publication date
- 2018
- Paginierung
- 01017 - 01017
- Datum der Veröffentlichung
- 2018
- Status
- Published
- Herausgeber
- EDP Sciences
- Herausgeber URL
- http://dx.doi.org/10.1051/epjconf/201817901017
- Datum der Datenerfassung
- 2020
- Titel
- Hadronic light-by-light scattering contribution to the muon g – 2 on the lattice
- Ausgabe der Zeitschrift
- 179
Datenquelle: Crossref
- Andere Metadatenquellen:
-
- Abstract
- We briefly review several activities at Mainz related to hadronic light-by-light scattering (HLbL) using lattice QCD. First we present a position-space approach to the HLbL contribution in the muon g-2, where we focus on exploratory studies of the pion-pole contribution in a simple model and the lepton loop in QED in the continuum and in infinite volume. The second part describes a lattice calculation of the double-virtual pion transition form factor F_{pi^0 gamma^* gamma^*}(q_1^2, q_2^2) in the spacelike region with photon virtualities up to 1.5 GeV^2 which paves the way for a lattice calculation of the pion-pole contribution to HLbL. The third topic involves HLbL forward scattering amplitudes calculated in lattice QCD which can be described, using dispersion relations (HLbL sum rules), by gamma^* gamma^* -> hadrons fusion cross sections and then compared with phenomenological models.
- Autoren
- Nils Asmussen
- Antoine Gerardin
- Jeremy Green
- Oleksii Gryniuk
- Georg von Hippel
- Harvey B Meyer
- Andreas Nyffeler
- Vladimir Pascalutsa
- Hartmut Wittig
- Autoren-URL
- http://arxiv.org/abs/1801.04238v1
- Schlüsselwörter
- hep-lat
- hep-lat
- hep-ph
- Notes
- 8 pages, 19 figures, contribution to the proceedings of FCCP2017 - Workshop on "Flavour changing and conserving processes", 7-9 September 2017, Anacapri, Capri Island, Italy
- Datum der Veröffentlichung
- 2018
- Herausgeber URL
- http://dx.doi.org/10.1051/epjconf/201817901017
- Datum der Datenerfassung
- 2018
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2018
- Titel
- Hadronic light-by-light scattering contribution to the muon g-2 on the lattice
Files
1801.04238v1.pdf
Datenquelle: arXiv
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