ABSTRACT
This chapter discusses what we can say about what the products X would look like in deep inelastic scattering e + p ? e + X. There are some measurements for certain definite final states X for small energies and low q2 of the virtual photon. Most of these can be understood from direct extensions of our theories for photon (q2 = 0) reactions. The chapter reviews the parton model and some assumptions that can be made about it. We suppose as in field theory, a wave function for a state can be given by giving the amplitude for finding various numbers of field quanta, or partons of various momenta. The wave function is a function of all of the momenta including those of finite momentum. Smaller momenta pile up until new phenomena sets in to change the equations to finally determine the wee x behavior.
