Light-by-light forward scattering amplitudes in Lattice QCD
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 γ*γ* → hadrons fusion cross sections an...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201817506030 |
| _version_ | 1818583113108815872 |
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| author | Gérardin Antoine Green Jeremy Gryniuk Oleksii von Hippel Georg Meyer Harvey B. Pascalutsa Vladimir Wittig Hartmut |
| author_facet | Gérardin Antoine Green Jeremy Gryniuk Oleksii von Hippel Georg Meyer Harvey B. Pascalutsa Vladimir Wittig Hartmut |
| author_sort | Gérardin Antoine |
| collection | DOAJ |
| description | 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 γ*γ* → 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–γγ 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. |
| first_indexed | 2024-12-16T08:00:07Z |
| format | Article |
| id | doaj.art-443646fd394f4dcbb33275c240031c06 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-16T08:00:07Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-443646fd394f4dcbb33275c240031c062022-12-21T22:38:37ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011750603010.1051/epjconf/201817506030epjconf_lattice2018_06030Light-by-light forward scattering amplitudes in Lattice QCDGérardin AntoineGreen JeremyGryniuk Oleksiivon Hippel GeorgMeyer Harvey B.Pascalutsa VladimirWittig HartmutWe 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 γ*γ* → 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–γγ 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.https://doi.org/10.1051/epjconf/201817506030 |
| spellingShingle | Gérardin Antoine Green Jeremy Gryniuk Oleksii von Hippel Georg Meyer Harvey B. Pascalutsa Vladimir Wittig Hartmut Light-by-light forward scattering amplitudes in Lattice QCD EPJ Web of Conferences |
| title | Light-by-light forward scattering amplitudes in Lattice QCD |
| title_full | Light-by-light forward scattering amplitudes in Lattice QCD |
| title_fullStr | Light-by-light forward scattering amplitudes in Lattice QCD |
| title_full_unstemmed | Light-by-light forward scattering amplitudes in Lattice QCD |
| title_short | Light-by-light forward scattering amplitudes in Lattice QCD |
| title_sort | light by light forward scattering amplitudes in lattice qcd |
| url | https://doi.org/10.1051/epjconf/201817506030 |
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