Light-by-light forward scattering amplitudes in Lattice QCD
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Abstract
- <jats:p>We present our preliminary results on the calculation of hadronic light-by-light forward scattering amplitudes using vector four-point correlation functions computed on the lattice. Using a dispersive approach, forward scattering amplitudes can be described by <jats:italic>γ</jats:italic><jats:sup>*</jats:sup><jats:italic>γ</jats:italic><jats:sup>*</jats:sup> → hadrons fusion cross sections and then compared with phenomenology. We show that only a few states are needed to reproduce our data. In particular, the sum rules considered in this study imply relations between meson–<jats:italic>γγ</jats:italic> couplings and provide valuable information about individual form factors which are often used to estimate the meson-pole contributions to the hadronic light-by-light contribution to the (<jats:italic>g</jats:italic> – 2) of the muon.</jats:p>
- Autoren
- Antoine Gérardin
- Jeremy Green
- Oleksii Gryniuk
- Georg von Hippel
- Harvey B Meyer
- Vladimir Pascalutsa
- Hartmut Wittig
- DOI
- 10.1051/epjconf/201817506030
- Editoren
- M Della Morte
- P Fritzsch
- E Gámiz Sánchez
- C Pena Ruano
- eISSN
- 2100-014X
- Zeitschrift
- EPJ Web of Conferences
- Online publication date
- 2018
- Paginierung
- 06030 - 06030
- Datum der Veröffentlichung
- 2018
- Status
- Published
- Herausgeber
- EDP Sciences
- Herausgeber URL
- http://dx.doi.org/10.1051/epjconf/201817506030
- Datum der Datenerfassung
- 2020
- Titel
- Light-by-light forward scattering amplitudes in Lattice QCD
- Ausgabe der Zeitschrift
- 175
Datenquelle: Crossref
- Andere Metadatenquellen:
-
- Abstract
- We present our preliminary results on the calculation of hadronic light-by-light forward scattering amplitudes using vector four-point correlation functions computed on the lattice. Using a dispersive approach, forward scattering amplitudes can be described by $\gamma^* \gamma^* \to$ hadrons fusion cross sections and then compared with phenomenology. We show that only a few states are needed to reproduce our data. In particular, the sum rules considered in this study imply relations between meson$-\gamma\gamma$ couplings and provide valuable information about individual form factors which are often used to estimate the meson-pole contributions to the hadronic light-by-light contribution to the $(g-2)$ of the muon.
- Autoren
- Antoine Gerardin
- Jeremy Green
- Oleksii Gryniuk
- Georg von Hippel
- Harvey B Meyer
- Vladimir Pascalutsa
- Hartmut Wittig
- Autoren-URL
- http://arxiv.org/abs/1710.09359v1
- Schlüsselwörter
- hep-lat
- hep-lat
- hep-ph
- Notes
- Proceedings of the 35th International Symposium on Lattice Field Theory (Lattice 2017), Granada, Spain. 8 pages, 15 figures
- Datum der Veröffentlichung
- 2017
- Herausgeber URL
- http://dx.doi.org/10.1051/epjconf/201817506030
- Datum der Datenerfassung
- 2017
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2017
- Titel
- Light-by-light forward scattering amplitudes in Lattice QCD
Files
1710.09359v1.pdf
Datenquelle: arXiv
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