Pseudoscalar transition form factors from rational approximants
PRISMA Cluster of Excellence, Institut für Kernphysik, Johannes Gutenberg-Universität, 55099 Mainz, Germany
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Published online: 9 June 2014
The π0, η, and η' transition form factors in the space-like region are analyzed at low and intermediate energies in a model-independent way through the use of rational approximants. Slope and curvature parameters as well as their values at infinity are extracted from experimental data. These results are suited for constraining hadronic models such as the ones used for the hadronic light-by-light scattering part of the anomalous magnetic moment of the muon, and for the mixing parameters of the η − η' system.
© Owned by the authors, published by EDP Sciences, 2014
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