Deep-inelastic scattering, partons and strong interaction ideas

The quark-parton model as applied to deep-inelastic lepton-hadron scattering is used as a laboratory model for the study of ideas encountered in strong interaction physics. First, two-component duality constraints are imposed on single-particle inclusive deep- inelastic distributions. In the target fragmentation region this involves a modification of the definition of the E functions introduced by Feynman. A duality relation connecting neutrino and electroproduction single-particle inclusive distributions is obtained. For omega to 1 and omega to infinity in the target fragmentation region an excess of pi /sup +/ over pi /sup -/ production is predicted for proton targets and an excess of pi /sup -/ over pi /sup +/ for neutron targets. For deuteron targets an excess of pi /sup -/ over pi /sup +/ for omega to 1 is found. In the laboratory model the analogue of the problem of approach to Feynman scaling encountered in hadronic reactions and the related problem of exoticity criteria is studied. (27 refs).