Pion distribution amplitudes within the instanton model of QCD vacuum
A. E. Dorokhov
Abstract
Pion transition form factor for the process γ*γ* π0 at space-like values of photon momenta is calculated within the effective quark-meson model with the interaction induced by instanton exchange. The leading and next-to-leading order power asymptotics of the form factor and the relation between the light-cone pion distribution amplitudes of twists 2 and 4 and the dynamically generated quark mass are found.
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