The relationship between the meson, baryon, photon and quark fragmentation distributions

The ideas presented in an earlier note on the relationship between the quark fragmentation distributions as measured in leptoproduction and the one particle distributions in the mesonic fragmentation regions of hadronic interactions are carried further to photoproduction and to the baryon fragmentation distributions. The results are as before interpreted in terms of a simple additive quark model where the main interaction is due to the wee partons whereas almost all the initial momentum is carried by one of the valence quarks or a diquark. (Auth.)