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The transition of virtual photons into pseudoscalar mesons

P. Kroll

hep-pharXiv:hep-ph/0110230

Abstract

The possibility to constrain the meson distribution amplitude from the transitions of virtual photons to pseudoscalar mesons is investigated. It is shown that for a large range in the two photon virtualities the transition form factors are essentially independent of the distribution amplitudes. This in turn entails parameter-free predictions of QCD.

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