With the basic concepts of the constituent-quark model formulated in the light-cone Fock approach we present a relativistic model of the pion and ρ-meson valence-quark structure. We point out that a nonstatic relativistic spin wave function and small transverse size of the valence configuration are essential to reproduce the basic features of the Chernyak-Zhitnitsky amplitudes for the π and ρ as they are obtained from QCD sum-rule techniques.
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Dziembowski et al. (1987) studied this question.
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