Pion Light-Cone Wave Functions and Light-Front Quark Model

Abstract

We discuss a relation between the light-front quark model and QCD. We argue that this model can be used for an evaluation of the light-cone wave functions for moderate values of "u", but that it is inapplicable for this purpose in the region near the ends points u=0,1. We find additional support for a recent analysis in which it was claimed that the twist-two pion wave function attains its asymptotic form. The asymptotic twist-four two-particle wave function is also in good agreement with the light-front quark model.

11 pages and 2 PS-figures in one gz-compressed .tar file. Minor change

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