MESONS IN A COLLINEAR QCD MODEL

A phenomenological model for the quark structure of mesons is consider ed. The model is based on the tube model for QCD, where all quanta wit h nonzero transverse momenta are neglected. In the limit that the mass term of the gluons goes to infinity, the model is equivalent to a com bination of the 't Hooft and Gross-Neveu models and can be solved semi analytically. The model has the properties of confinement, chiral symm etry breaking, and asymptotic freedom and thus resembles QCD in three key respects. Spectra, distribution amplitudes, and form factors of me sons are analyzed. [SO556-2821(97)01223-X].