The hadronic structure and sum rules in QCD

Sum rules for the hadronic structure and for moments of the hadronic distribution amplitude phi(chi/sub i/,Q) are discussed by using Fock state basis {psi/sub eta/(chi/sub i/,κ-vector/sub perpendiculari/,λ/sub i/)}. These sum rules show that the influence of the non-perturbative effects on the hadronic wavefunction is very important. The initial form phi(chi/sub i/,Q/sub o/) can differ greatly in its asymptotic form phi/sub as/(chi/sub i/) and the chi distribution of meson's wavefunction is greatly different for the different mesons. The valence wavefunction of a hadron is more compact than the hadronic radius