Abstract
The parton structure revealed by the scattering of leptons from atomic nuclei can be described either by means of nuclear physics concepts or in terms of a fundamental QCD picture of quarks and gluons. In this paper the nuclear physics description, formulated in the convolution model with ordinary or exotic hadrons as constituents, is examined, and various constraints which should be satisfied are discussed. The conclusion is that the generalized hadronic convolution model must, at least for the present, in any case form part of any comprehensive treatment of the parton structure of composite systems.
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This work was begun while CAE was a visitor at the University of Manchester. The Science and Energy Research Council of the UK and the Foundation for Research Development in South Africa are thanked for their financial support, which made this visit possible, and the Nuclear Theory Group in the Schuster Building for their warm hospitality, which made it a pleasure.