Pion distribution amplitudes within the instanton model of QCD vacuumстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The pion transition form factor for the process γ*γ* π0 at spacelike 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.