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η and η' transition form factors from rational approximants

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arxiv 1307.2061 v3 pith:PLIIWUG7 submitted 2013-07-08 hep-ph

η and η' transition form factors from rational approximants

classification hep-ph
keywords factorsformapproximantsparametersrationaltransitionanalyzedanomalous
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The \eta and \eta' 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. The slope and curvature parameters of the form factors as well as their values at zero and infinity are extracted from experimental data. The impact of these results on the mixing parameters of the \eta-\eta' system and the pseudoscalar-exchange contributions to the hadronic light-by-light scattering part of the anomalous magnetic moment are also discussed.

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Cited by 3 Pith papers

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