| Issue |
EPJ Web of Conferences
Volume 118, 2016
International Workshop on “Flavour Changing and Conserving Processes” 2015 (FCCP 2015)
|
|
|---|---|---|
| Article Number | 01024 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/201611801024 | |
| Published online | 26 April 2016 | |
https://doi.org/10.1051/epjconf/201611801024
On the precision of a data-driven estimate of the pseudoscalar-pole contribution to hadronic light-by-light scattering in the muon g−2
Institut für Kernphysik, Johann-Joachim-Becher-Weg 45, Johannes Gutenberg-Universität, D-55128 Mainz, Germany
a e-mail: nyffeler@kph.uni-mainz.de
Published online: 26 April 2016
The evaluation of the numerically dominant pseudoscalar-pole contribution to hadronic light-bylight scattering in the muon g − 2 involves the pseudoscalar-photon transition form factor FPγ*γ*(−Q12−Q22) with P = π0, η, η′ and, in general, two off-shell photons with spacelike momenta Q1,22. We determine which regions of photon momenta give the main contribution for hadronic light-by-light scattering. Furthermore, we analyze how the precision of future measurements of the single- and double-virtual form factor impacts the precision of a data-driven estimate of this contribution to hadronic light-by-light scattering.
© Owned by the authors, published by EDP Sciences, 2016
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